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Rice plays a fundamental role in the lives of the majority of the Malagasy population. It represents the essential part of their diet on average kg per person per year. But their cultural and symbolic capital is as important as their economic capital. Almost impossible to imagine a meal including breakfast without travel, the side dishes are often minimalist, while the quantities of rice are gigantic. The rice-growing landscapes are very diverse: bands of rice paddies lining the valley bottoms, narrow terraces on the slopes, rectangular plots crisscrossing the plains, paddies with flood recession on the banks of lakes and rivers, and open slash-and-burn fields in the forest. In the highlands, lowland rice cultivation combines checkerboard plots in adjacent valleys with large valley plots. Farmers perform miracles to control water that they fear is scarce or abundant. Transplanting reduces water-related risks and weed competition. The Wet rice cultivation flooded or irrigated makes up most of the agricultural landscape in the highlands. The soil of the rice field is prepared with the help of the Angady , a kind of spade with a long and narrow iron and a heavy wooden handle, turned. Entire mountains and endless landscapes have been stabbed with the spade on the highlands for generations. The rice fields are a secular heritage of the ancestors who had fed the generations for centuries, they count with the Zebu stock most important place in the native culture. The trampling of rice fields by zebus tends to disappear. The plow and harrow pulled by two zebus are used for plowing and crumbling until a liquid mud is formed. The water supply is provided in the valleys by springs - water that, due to gravity, comes from land to plot circulates - and in the valleys by rivers, which are usually dammed. A peripheral canal protects the rice fields from the runoff water that runs down the hills in the rainy season. The drainage and irrigation network provides regular flooding of the plots. The dikes seal off the rice fields, hold back water and serve as paths. The steeper the slope, the smaller the plots and the dike network. Harvested is made with a sickle, very time-consuming method but which has been used for centuries. The threshing is done on mats by threshing the sheaves on a large stone or rock so that the rice grains can be separated from the straw together with the husk and then picked up. Rice is grown on the eastern slope of the island, a mountainous region covered with forests, with a hot and humid climate. The term 'tavy' refers both to the land in the middle of the forest and to the method of cultivation: shifting cultivation, slash-and-burn after clearing. This system requires an axe and a long-handled knife, but no tillage. Once vegetation is cut and dried, firebreaks are created in front of and behind the plot and set fire to the plot. The fire lasts part of the day. Sowing takes place after the burning, just before the rain is expected. The rice grains are buried in pits dug with a digging stick. Until the first ears appear, the plot is regularly weeded by hand. Growth in this method lasts from four to six months. The cut ears are dried by hand on the burnt logs, which lie on the ground or on a large mat. The plot will remain fallow for several years after that. Marriage in Madagascar is very important for the families and there are many different ways to get married. Honey and beekeeping in Madagascar A special trip for French beekeepers had allowed me in to see the. Famadihana burial rites from Madagascar Long live the dead! For the Madagascans, the grave is only a. Possession and exorcism rituals in Madagascar In Madagascar, dreams provide the interpretation of the smallest everyday events,. Do you have any questions? Simply get in touch with us! Please use the contact form on the right. We will take care of your request as soon as possible. Use our contact form to reach us directly! We guarantee a quick response and look forward to dealing with your individual requests and inquiries. Your dream vacation in Madagascar is just a message away. Don't hesitate - we are here for you! Thank you for thinking about donating to the poorest. Maybe you will come back here again. Kind regards Klaus. Villa Sibylle Antananarivo Madagascar. Generic filters. Trip offers. Connection tours. RN7 variants. Motorcycle tours and rental. The North of Madagascar. The West of Madagascar. The East of Madagascar. Madagascar slope rides. Splendor of the slopes. Sport travel. Photo travel. Ornithological trips. Fellow travelers welcome! Paragliding - Paragliding. The south of Madagascar. The most beautiful itinerary through Madagascar. Duration 16 days. Mountain cloud forests - Madagascar's east coast - Nosy Be. Duration 20 days. Tsingy of Bemaraha and Morondava. Duration 10 days. Duration 23 days. Andasibe-Ankanin'y Nofy-Sainte Marie. 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Rice cultivation in Madagascar Irrigated rice cultivation Rice plays a fundamental role in the lives of the majority of the Malagasy population. Manual plowing plowing with a spade The soil of the rice field is prepared with the help of the Angady , a kind of spade with a long and narrow iron and a heavy wooden handle, turned. Plowing, harrowing and grading The trampling of rice fields by zebus tends to disappear. Irrigation The water supply is provided in the valleys by springs - water that, due to gravity, comes from land to plot circulates - and in the valleys by rivers, which are usually dammed. Diguettes and dams The drainage and irrigation network provides regular flooding of the plots. The rice harvest Harvested is made with a sickle, very time-consuming method but which has been used for centuries. The sheaves are placed in a row on the ground and then transported to the threshing floor. The threshing The threshing is done on mats by threshing the sheaves on a large stone or rock so that the rice grains can be separated from the straw together with the husk and then picked up. The women then sort the rice, which is stored in silos or granaries. Peregrine rice cultivation, also called 'Tavy'. Land clearing Once vegetation is cut and dried, firebreaks are created in front of and behind the plot and set fire to the plot. Sowing and plot maintenance The rice grains are buried in pits dug with a digging stick. Harvest Growth in this method lasts from four to six months. Blog topics. Latest blogs. Karenjy, the handmade car from Madagascar drive yourself. Marriage in Madagascar. Kere-the dramatic drought in the south of Madagascar. Tourism in Madagascar-shattered on the ground. Welcome to the year ! The scattered islands-Iles Eparses: 'France respects neither history nor international law. 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Rice culture in Madagascar

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Leighton Reid describes new research linking slow forest recovery to the ancient and protracted isolation that has made Madagascar a hotspot of global endemism — plus an example of working with local farmers to overcome these challenges and restore native rain forest. Madagascar is a special place with a special history. Separated by ocean from Africa and India for the last 88 million years, this isolated tropical island has fostered the evolution of plants and animals found nowhere else on Earth. Lemurs, couas, and the plant family Sarcolaenaceae are all examples of organisms that evolved only in Madagascar. Madagascar also has special problems. The combination of a large proportion of endemic species and a high degree of habitat loss makes Madagascar a biodiversity hotspot. Some people call Madagascar one of the hottest hotspots because its endemism and habitat loss are so extreme. This week, a new study led by UC Berkeley PhD student Kat Culbertson identified another special problem in Madagascar: following disturbance, Malagasy forests recovery very slowly. Why do Malagasy forests recover more slowly than forests in other regions? Culbertson and her co-authors developed four hypotheses and reviewed an array of scientific literature to evaluate support for each one. Native Malagasy forests lack resilience to shifting nutrient and fire regimes from current farming practices. Many rural people across Madagascar practice tavy , a farming method that involves clearing forest, burning it, and then growing rice — a staple crop. After one or a few years of growing rice, the land is allowed to recuperate for several years before it is cultivated again. In other tropical forest locations, such as southern Mexico where humans have farmed for thousands of years, similar practices can coexist with native forests, but Malagasy forests seem to have little resilience to tavy, as least at the intensity with which it is practiced today. For example, in eastern Madagascar, a year tavy cycle can cause a native forest to transition to permanent herbaceous vegetation in just years. The soil nutrient stocks in that fallow field may be as little as Madagascar is an island, and islands tend to have more problems with invasive species. Goats in the Galapagos, brown tree snakes in Guam, acacia in Hawaii, and rats everywhere — these are just some of the ways that island ecosystems have been overwhelmed and transformed by invasive species. Madagascar is no exception. Rain forest regeneration at Ranomafana is stalled by invasive guava, eucalyptus, and rose apple, while dry forest regeneration at Berenty is inhibited by a vine — Cissus quadrangularis. People in Madagascar have many more anecdotes about problems with invasive species like silver oak and Melaleuca quiquenervia , although the extent and impact of these invaders on forest recovery have not yet been studied. Old, weathered soils have favored the evolution of slow-growing native plants. Madagascar is not only an island, it is a very old island, and as such its soils have been weathered and depleted of important nutrients like phosphorus. If native trees have evolved to grow more slowly in Madagascar because of low nutrient availability, then on average exotic tree species should grow faster than native Malagasy ones in the same gardens. This has been shown in a few cases, but a more compelling analysis would need more species. Finally, Malagasy forests have dysfunctional seed dispersal. One way in which Madagascar is different from other tropical areas is that by and large its trees have evolved to have their fruits dispersed by lemurs. Unfortunately, many of the lemurs that could disperse Malagasy tree fruits are either extinct or endangered — in many cases due to a combination of hunting and habitat loss. Moreover, the lemurs that remain are reluctant to venture outside of forest fragments perhaps with good reason and so they are unable to disperse seeds to regenerating farmlands that most need them. In essence, the ancient and protracted isolation that has made Madagascar so unique has also made it uniquely vulnerable to contemporary changes like deforestation, fire, and agriculture. The result is an unfortunate combination: Madagascar not only has some of the highest deforestation rates, it is also one of the places least ecologically equipped to rebound from those disturbances. This is a tall order in a country where technical difficulties are high and financial resources are often low, but it can be done, and the way forward, undoubtedly, is to work with local people. One group that exemplifies bottom-up restoration is GreenAgain , a non-profit restoring native rain forest and supporting rural livelihoods in eastern Madagascar. GreenAgain is led and staffed by farmer-practitioners whose neighbors, family, and friends contract with GreenAgain to design, plant, and monitor diverse native forests on their lands. Last year, GreenAgain staff planted 20, trees across central eastern Madagascar, each one carried by hand, on foot, from one of eight regional tree nurseries. The rural farmers at GreenAgain collect rigorous data on tree survival and growth and collaborate with scientists to analyze and share the results of their tree planting experiments. For example, one of the earliest experiments at GreenAgain was an assay of tree planting strategies intended to improve native tree seedling survival during plantings that occur in the dry season. One of the strategies that local farmers recommended to improve survival was to erect small teepees over each seedling using the leaves of a common fern, Dicranopteris linearis. In contrast, many of the other treatments had no discernable effect. To analyze and publish these findings, GreenAgain partnered with an award-winning undergraduate researcher, Chris Logan, in my lab at Virginia Tech, who led a peer-reviewed paper that is now available at Restoration Ecology. Could technological solutions like hydrogels or irrigation systems produce greater improvements in dry season tree survival? Yes — they probably could for a certain price, but homegrown solutions like fern leaf shade tents are free and easily accessible to any person doing restoration across eastern Madagascar. They are also more likely to be used because they were developed by local people. This study also showed that some native tree species are much better at coping with dry season stress than other species, so another possible solution for dry season plantings could be to plant only the tough survivors. Once those trees survive and begin to produce shade, fern leaf tents may not even be needed anymore to help more sensitive native species survive and grow. If you are in a position to support the work of local farmers restoring rain forests in eastern Madagascar, consider donating to GreenAgain at their website, greenagainmadagascar. Here they describe the content and purpose of their new Tropicos database. Desert Trees of the World represents a multi-purpose, participatory database in which we have gathered a vast array of information about dryland trees, where and how they live, the communities they are part of, the many ways in which they are used by people, and some elements about their successful cultivation. Our database brings together the most up-to-date botanical, biogeographical, ecological, and ethnobotanical information on species of trees from the arid and semi-arid regions of five continents and many islands. Further, maps of collection sites, as well as full nomenclatural, bibliographic, and voucher specimen data accumulated digitally at MBG these past 30 years are available. The data base is intended for students of natural history, practitioners, policy-makers, and scientists working in ecological and biocultural restoration, conservation, and sustainable and restorative environmental management. Most people think that deserts are — by definition — devoid of trees. Not true! Indeed, some of the strangest, oldest, and most remarkable tree species on the planet are found in drylands, a term often used to refer to deserts and semi-deserts, also known as arid and semi-arid lands. For our purposes, drylands are all the lands of the globe that receive less than mm ca. We also pored over specimens housed in three dozen major herbaria, and read thousands of technical scientific articles and floras in several languages. And, as this is the 21 st century, we used information already online in another Tropicos project, the Catalogue of the Flora of Madagascar as well as many other online sources. In the harsh conditions of deserts, evolution has favored some of the strangest-looking trees on the planet. In southern Oman, we explored the remote Wadi Aful, where wild frankincense trees Boswellia sacra grow between sheer rock walls. The irontree Astrotricha hamptonii is not among the most impressive-looking desert trees in our database. And yet, because it only grows on ironstone formations, clever prospectors used its distribution to discover some of the largest iron ore deposits in Western Australia. And the end result was truly remarkable: a sum of species of trees native to deserts around the world, occurring in genera and families of flowering plants. Of course, new tree species are still occasionally being discovered, mainly coming out of Namibia, Somalia, and southern Arabia, but we are confident that we have captured the great majority of all extant dryland trees in this database. Then again, some desert trees are not so unfamiliar to visitors from Europe or North America, such as these junipers Juniperus phoenicea and oaks Quercus calliprinos , growing in the central mountains of Jordan. If asked about what a desert tree looks like, you might think of spiny or resinous, sticky trees. And you would be right. Fabaceae, the legume family, make up just over a quarter of all species, and of those, are Acacia sensu lato. And in third place are the Burseraceae, with species. This is the family of myrrh and frankincense, two desert trees whose importance for humans dates back millennia, tied as they are to the great cultures of the Old World. But there are only 28 desert palm species, and 49 tree cactus species. We also have some remarkable oddities, such as one arborescent member of the cucumber family Dendrosicyos socotrana , and several rose relatives Polylepis spp. Interestingly, the different desert areas of the world are not equal in terms of their contributions to our database see the table below, the full version of which is posted on the homepage for our database. Five regions alone account for two thirds of all the species in our database, with the deserts of Australia and Madagascar being almost preposterously rich in tree species. But of course the area of arid Australia is vastly greater than that of Madagascar, so that in fact the numbers of families, genera and species in the latter country are really the most impressive of all. Highly degraded spiny thicket vegetation at the edge of the Ranobe PK32 Protected Area near the town of Ifaty, in western Madagascar, with few trees other than the emergent baobabs, Adansonia rubrostipa Malvaceae remaining. Young plants of the spiny tree, Didierea madagascariensis Didiereaceae developing in the bare sandy soil around the baobab in the foreground. Secondary growth spiny thicket near the Ranobe PK32 Protected Area north of Toliara, in Madagascar, with occasional individuals of the locally endemic spiny tree Pachypodium mikea Apocynaceae — center image, but dominated by mature Didierea madagascariensis Didiereaceae. A zoom on the astonishing dryland tree species richness and diversity of Madagascar can already be found in an article we published last year, covering the remarkable assemblages of tree species found in the driest part of Madagascar , of which no less than are endemic to the country. This is all the more remarkable considering that they are all crowded into a narrow coastal strip in the Southwest, which is a mere 14, square kilometers square miles , or the same size as Connecticut. For us, a key feature when discussing desert trees is the fact that even in the harsh areas where they found, trees can grow densely enough to form true woodlands, sometimes even with dense canopies, which has enormous importance for desert ecosystems and people. In previous blog posts we have reported on striking examples — in northeastern Jordan , and coastal Peru , among others, where evidence of former woodlands provide rays of hope and guidance for people attempting ecological restoration in desert lands. We now have a more comprehensive book in preparation, called Desert Canopies: Reimagining our Drylands. Three chapters on animal-tree relations, and photos and drawings by Thibaud will help make this of interest for a wider audience, not just specialists. We also develop the theme of ecological restoration and provide profiles and virtual field trips from many restoration programs in drylands around the world. Unfortunately, most drylands are found in poverty-stricken regions of developing countries, where trees are an extremely valuable resource. In recent decades, desert canopies have been hammered by rising populations of people and livestock. Western Australia is one of the few places where reasonably intact desert woodlands still cover large areas. A typical landscape of the Great Western Woodlands, in the semi-arid southwest of Australia mean annual rainfall — mm , with gimlet eucalypts E. In our last blogpost , we reported on some notable trees, tree canopies, and indigenous peoples of the Guajira peninsula in northern Colombia. From looking at the tree cover, it is hard to believe that this area of Colombia is technically a desert! The Guajira, as the region is called, is a microcosm of the problems and drivers of arid lands everywhere, as well as a good example of the diversity and life and beauty that can be found in deserts. Other striking tree canopies can still be found in diverse places today, including some of the driest places on Earth. Even there, trees can thrive amid the sand dunes in this case, the venerable khejri, Prosopis cineraria , that we were lucky enough to observe in northern Oman. On the arid coast of northern Peru , Prosopis pallida and other trees can grow in the ever-so-slightly richer soils at the bottom of gullies amid the plains. As noted earlier, drylands make up more than two-fifths of all lands on Earth, at present. Furthermore, despite their harsh conditions, drylands are presently home to well over 2 billion people, and indeed many of these are among the poorest and most vulnerable populations on Earth. The United Nations, and many other organizations are working hard on the problems of drylands and their peoples, but it is very much an uphill battle… As we passed Earth Overshoot Day on July 29 th this year— the earliest date ever — it is timely to stress once again that the restoration and rehabilitation of degraded ecosystems will be key if we are to hope for a sustainable future. Restoration is undeniably harder in arid lands than in many other places, but that only means that it is more necessary. Our database is offered in that spirit. The small, arid Isla Guadalupe , off the coast of northwestern Mexico, is home to several endemic tree species, which were almost extirpated by introduced goats. But now that the goats have been removed from the island, the trees are making a comeback. A large number of the trees included — out of to be exact — are endemic to a single country — and most are in urgent need of committed conservation, restoration, and better management. We hope that our database can act as a reminder of the wealth of life forms that can thrive in arid lands, and an exhortation to not give up on their desert homes, scarred and battered as they may be, but rather to try and help them flourish once again. He describes his observations on forest succession at Ankafobe, a site in the central highlands. But, those looking more carefully will also detect pockets of forest within the rich network of valleys. These forests have a distinct fauna and flora but, perhaps because of their small size, they have attracted little interest from conservationists. Consequently, in the last few decades, the majority have been degraded or entirely destroyed as their trees were cut for timber or charcoal and the relicts burnt by wild fires that rage over this landscape in the dry season. It is one of the larger remaining areas of highland forest but, here too, the forest has been impacted by exploitation for timber and charcoal and burning by wild fires. Efforts are underway to restore this forest to its former extent in the recent past. This is no easy task because away from the current forest edge tree seedlings are subjected to harsh conditions: soils impoverished and compacted by annual burning, grasses that compete greedily for water and nutrients, an extended 7-month long dry season, and exposure to hot sunshine and strong desiccating winds. Even when firebreaks are used to prevent wildfires from penetrating the grassland surrounding the forest, few tree seedlings naturally colonize outside of nurturing limits to the forest. Few but not none. A closer inspection of the landscape reveals some woody plants in the grassland on the less sunny south-facing slopes surrounding the forest south is less sunny because Madagascar is in the southern hemisphere. Perhaps then the forest could be helped to expand by planting young trees preferentially on these slopes? Vegetation is lusher on south-facing slopes left compared to north-facing slopes right at Ankafobe, a proposed conservation area in highland Madagascar. To test this idea in we planted 25 nine-month old seedlings of each of four native tree species in grassland 20 m from the forest edge on both a south-facing slope and a north-facing slope. The species were selected for this test are native to the Ankafobe Forest and were available at the local tree nursery when the experiment was installed. After 12 months the survival and growth of these young plants were measured. All four species survived well on the south-facing slope but only one species, Nuxia capitata , had good survival on the north-facing slope. Mortality of Uapaca densifolia was total on the north-facing slopes. Growth was sluggish on both the south-facing and north-facing slopes with the exception of Nuxia capitata on the south-facing slope that had a mean month growth exceeding 20 cm. These results suggest that south-facing slopes may provide the best results, at least at Ankafobe, for forest restoration endeavors. Aspect — the direction that a slope faces — makes a big difference for vegetation in the temperate zone, especially in dry places. But it is not often considered in tropical ecology. Directly or indirectly, the difference in sun exposure between the slopes at Ankafobe can make the difference between life and death for young trees growing in this hostile, water-stressed environment. To read more blog posts about the restoration efforts at Ankafobe, please click here. You may also read a open access paper about seedling trials at this site here. Green Again Madagascar is a young non-profit aiming to reconnect rain forests in eastern Madagascar and collecting heaps of data in the process. Matt Hill is trying to restore a rainforest corridor across eastern Madagascar. No longer. Over the last 70 years humans cleared almost half of what was there in the s — mostly for farming. Although the farming is often temporary, the forest rarely grows back. Weedy ferns and exotic trees find their way onto the abandoned farms and take hold — boxing out the Malagasy species. Some tropical rain forests can recover swiftly on their own, but not these. Eastern Madagascar is a strong candidate for hands-on ecological restoration. Madagascar left and the region of eastern Madagascar where Green Again Madagascar operates right. Dark green areas are intact rain forest. Colored ovals show the expanding project scope of Green Again over the past four years. Green Again hopes to one day reforest a longer corridor across the northeastern side of the island. Imagery is from Google Earth. In the landscape around Foulpointe, native forest was replaced by shifting agriculture, which was replaced by a forest of invasive Melaleuca quinquenervia , a tree native to Australia. Photo by L. His father was a math professor, and Matt followed in his footsteps, earning a degree in mathematics from the University of Chicago and subsequently a masters from UCLA. He retired early seeking a simpler and more natural lifestyle, which he found in abundance in rural northeastern Madagascar. I first met Matt in at Parc Ivoloina — a zoo and forestry station near the port city of Toamasina. Clad in gym shorts and flip flops, Matt was buzzing between nursery beds shaded with bamboo slats and a laptop powered by a portable solar panel, where a local was entering data about tree survival and growth. Matt explained his tree planting system to me. At each stage, from seed to tree, he and his team measure plant performance — including survival, height, and diameter. Matt Hill left explains database management to a local community member. Matt was introduced to forest restoration by accident when he was stranded for several days in Toamasina waiting for the wild, muddy road to Maroantsetra to become passable. He visited Parc Ivoloina on a whim and learned about a recent wildfire. A local man had been making charcoal when his fire got out of hand and burned his own farm and 20 acres of a nearby forest. The experience moved Matt to begin growing and planting native trees on the burned land. From the start, Green Again has been a collaborative effort involving a team of local people. He initially advised Matt on the project and helped build local support. Many community members joined the restoration effort — growing trees in the nursery and planting them in the burned area. It is a steep learning curve. Many local people have only a few years of school and may not have held a pencil for some time. Matt teaches them to use GPS units, record data on datasheets, and enter it into an Excel spreadsheet. When the data do not make sense, they return to the field to take repeated measurements. The work is hard but good by local standards. Many locals make their living by breaking large boulders into gravel by hand, with a hammer. Others spend their days shoveling sand from the river into dugout canoes and paddling it to shore where it is picked up by road construction trucks. In contrast, locals who get involved in these forest restoration projects pick up transferable skills in horticulture, computing, and business management. In early November , Matt called me in a panic. There was a wildfire. His plantings had burnt to a crisp. Fires are common in eastern Madagascar, but this was a tragedy. In the ashes of his ruined experiment, Matt found a few survivors. He discovered that some native trees are resistant to fire. These survivors may lose their leaves and stem to fire, but they can resprout from roots. Importantly, Matt also learned that trees planted near the edge of plantings were more vulnerable to fire than trees planted in the center of a plantation. This is because the landscape outside of the tree plantations was more flammable than the trees inside the plantations. In particular, the thatch from a common fern Dicranopteris linearis would catch fire and burn for quite a long time. Now, new plantings are designed with the fire survivor species on the outside and the delicate species on the inside. Some new plantings are also more extensive, so that the edge-to-interior ratio is lower and less of the trees are placed in the riskiest spots. A pristine rainforest in eastern Madagascar. Green Again Madagascar has a small operating budget based on charitable donations and memberships. The dissected landscape of the Tampoketsa de Ankazobe in central Madagascar. Imagery: Google Earth Thin, dark lines demarcate nooks and crannies — nearly the only places where bits of forest remain. Formerly, the forests here covered more territory. Just how much territory is debated; ancient grasslands are also present in highland Madagascar. But in this area, about three hours northwest of the capital, many forests have been cleared, burned, and converted to new grassland within living memory. To restore forests to their recent extent would benefit a range of species, including Schizolaena tampoketsana a threatened, micro-endemic tree and an undescribed species of fat-tailed dwarf lemur. However, restoration has been easier said than done so far. Natural forest regeneration is slow to non-existent , even near remnant forests where fire is excluded. Planted tree seedlings grow only millimeters each year, if they survive at all. Adding fertilizer seems to inhibit seedling growth. Inoculating seedlings with mycorrhizal fungi seems promising, but we are not yet sure if this will make a difference in the field. Following a field trip in November , we decided to test a couple of other tactics for growing native trees on this weathered plateau. First, we tested planting trees near existing forest. Being near the forest could help young seedlings by shading them from the hot sun or by sharing beneficial microorganisms. Second, we put shade structures over some of tree seedlings to test how much the bright, hot sunlight prevented tree growth. We tested four tree species: Baronia taratana Anacardiaceae , Nuxia capitata Stilbaceae , Uapaca densifolia Phyllanthaceae , and Eugenia pluricymosa Myrtaceae. Photo: Chris Birkinshaw. Three of the tree species survived and grew more when we planted them next to the forest. The fourth, Nuxia capitata , was a super species and grew relatively well wherever it was planted. Two of the four species also survived more often beneath shade structures. But interestingly, this shade effect did not completely account for the effect of proximity to forest. That suggests that shade is important for protecting young seedlings from the hot sun, but something else is going on too. Perhaps trees growing next to the forest get a boost of water, since remnant forests sit at the valley bottom where water collects. If this is true, then tree seedlings might do well in any valley bottom, not just ones with remnant forest in them. Our study site, called Ankafobe, is only a small area, so it would be a stretch to generalize our observations to the entire region. However, we are not the only ones to have done such a test in this ecosystem. In , Ingar Pareliussen led a study with the same basic elements as ours at a site ten kilometers away, at Ambohitantely. In contrast, shade structures did not improve seedling survival. In fact, one species grew worse in the shade. One vision for landscape-scale forest restoration on the Tampoketsa de Ankazobe. We used an edge-detection algorithm in Inkscape to highlight forest edges and valley bottoms, the places where trees grew best in our study. Together, our two studies begin to suggest the outlines of a vision for landscape-scale forest restoration on the high Tampoketsa de Ankazobe. If native tree seedlings perform better along forest edges, it follows that a cost-effective strategy would be to focus on planting those areas first, leaving the higher, drier areas alone. Planting along edges would also be a conservative strategy given our hazy understanding of past landscapes. Some grasslands in highland Madagascar seem to be very old, and planting trees in such places could destroy habitat for grassland species, which are threatened in their own right. For more information about this experiment, you can read our open access paper in Plant Diversity. We have also published several other blog posts about Ankafobe. Many are threatened with extinction due to habitat loss. Several previous posts have described forest restoration efforts at this site, home to the largest population of the endemic sohisika tree Schizolaena tampoketsana — a species that belongs to a family Sarcolanaceae that only exists on Madagascar. A small number of forest restoration projects in Madagascar routinely inoculate the tree seedlings in their nurseries with a homemade mycorrhizal inoculum. While the nurserymen are convinced that this technique promotes growth and survival of tree seedlings, there seems to be no published data objectively demonstrating these positive outcomes. In an effort to provide the evidence to justify investment in this technique, we designed a simple experiment that will compare the survival and growth under four treatments of young plants of six native trees planted in grassland adjacent to the Ankafobe Forest on the central Malagasy highlands. Table — Four experimental treatments to test the effects of mulch and mycorrhizal inoculum on native tree seedling growth in highland Madagascar. In our experiment, fifteen seedlings of each of six native tree species will be grown under each of the four treatments listed above. The substrate remaining in the pit is the inoculum and was used by adding one tablespoon to each seedling container. Beans and maize are grown in topsoil collected from a remnant forest to amplify local mycorrhizae populations. This enriched soil i. The tree seedlings that received mycorrhizal enrichment were inoculated in November , and all of the seedlings were otherwise grown under the same conditions in the nursery until January when they were planted out into an experimental plot at Ankafobe. The comparison of seedling performance with and without the addition of mulch is interesting because of the possibility that mulch helps to maintain a relatively cool and moist environment in which the mycorrhizae can flourish. P values are adjusted for multiple comparisons with Bonferroni correction. Although we plan to measure seedling survival and growth 12 months from the time when they were planted i. On average, inoculated seedlings of Baronia tarantana are 1. For the other species there was no significant difference between the height of the inoculated and non-inoculated plants. Tree seedlings are planted out in a field experiment at Ankafobe in January This post was co-written by Leighton Reid and Chris Birkinshaw after a three-day field trip in the tampoketsa with Cyprien Mandriamanana and Jeannie Raharimampionona. A narrow, paved road winds north from Antananarivo through a high, windswept plain. It is the wet season, and the hills are green and close-cropped, but in the long dry season the landscape burns black. Orange rivers wind through the valleys, muddied by massive erosion. Here and there are thin strips of riparian forest, chock full of endemic species. Ten kilometers to the northwest is Ankafobe, a much smaller forest fragment managed by a local community with assistance from Missouri Botanical Garden. Why is forest recovery so rare in the Malagasy highlands? The degradation cycle often starts when people cut forest trees to extract wood for timber and charcoal production. Small-scale cutting opens the canopy, dries the forest floor, and creates debris, all of which increase forest vulnerability to annual wildfires that sweep across the grasslands during the eight month dry season. C4 grasses quickly colonize the burned land, inhibiting forest recovery, and creating ideal conditions for future fires. The reason that Ambohitantely has natural forest recovery for us to observe is because reserve staff maintain a wide fire break for more than thirty kilometers around the reserve. Our guide at Ambohitantely took us on a hike through several areas where forest had once been cleared and burned but where fire had been excluded for 15 or 25 years, allowing the forest to begin to recover. Frankly, the vegetation was uninspiring. Low shrubs and forbs were scattered through a matrix of C4 grass mostly Aristida , but trees and tree seedlings were nowhere to be seen outside of the forest where they were abundant. By tropical forest standards, this looked slow. After 25 years of recovery, forest edges were sharp. Tree seedlings were almost totally restricted to forest, and grasses dominated the ground layer just outside. Our main interest in Ambohitantely was to compare natural forest recovery there to our observations at another forest fragment, Ankafobe, 10 km northwest. For the last decade, MBG has partnered with a local community to preserve a thin, riparian forest containing several critically endangered plant species. Community members constructed a fire break and have begun to restore the surrounding hillsides by turning over the orange clay and planting fast-growing legumes to develop the soil. A degraded hillside at Ankafobe; the remnant forest is down the hill to the right, near the edge of the photo. The tree at the top of the hill is Schizolaena tampoketsana , a critically endangered microendemic in an endemic Malagasy plant family Sarcolaenaceae. It is a remnant forest tree that likely escaped repeated fires by being nestled in a deep, protective gully. The multi-stemmed shrub in the foreground is actually a large tree species, Brexia montana , which has likely resprouted many times from a well-developed root system. Some of our comparative observations were promising. We were happy to find examples at Ambohitantely where recovering land dominated by heather and blueberry seemed to have continued developing into a more diverse thicket, including Nuxia capitata , Psiadia altissima , and Razafimandimbisonia minor. At Ankafobe, we had worried that the heather growing in some areas signified poor soil conditions and possibly arrested development. Overall our visit left us with more questions than answers. We hope to answer at least a couple of them over the coming years. Although Ambohitantely is the only remnant forest fragment of any size, we learned recently that it may not be a perfect reference system for Ankafobe. For one thing, Ambohitantely is slightly higher and farther east, which results in considerably greater cloud cover during the dry season. This probably ameliorates the harsh conditions outside of the forest, at least a little. Thanks, Michael Douglas! Goodman, S. Pareliussen, I. Restoration Ecology It is unclear whether this is because of toxicity a direct effect or because other plants, like shrubs, are better able to utilize the nutrient pulse and then compete more strongly against the native tree seedlings an indirect effect. Thomas Timberlake and Cyprien Miandrimanana write from Madagascar about a field experiment using fungus to help tree seedlings survive. One of the problems that has long bedeviled ecological restoration efforts in Madagascar is persuading young seedlings to grow at a pace of more than just a few centimetres per year. The site of Ankafobe in the central highlands is a prime example, with many five year old individuals, planted in the anthropogenic grassland surrounding the remaining forest fragments, still no taller than waist height. Clearly, the environment into which the seedlings are planted is in some way inhospitable. One hypothesis to explain seedling underperformance is that they are not managing to establish their normal symbiotic relationships with vesicular arbuscular mycorrhizae VAM fungi on which most higher plants depend. In a VAM symbiosis, plants exchange a significant carbohydrate donation to the fungus in return for important nutrients, particularly phosphorus, and often increased drought tolerance. So if mycorrhizae propagules are absent in the savanna soil, this could well explain the slow growth rates and high mortality observed among planted tree seedlings at sites like Ankafobe. In response to concern about poor seedling performance, various restoration projects in Madagascar have begun inoculating their nursery seedlings with VAM using a simple protocol pioneered by Mitsinjo , a restoration project in the eastern rain forest of Andasibe. Soil presumed to contain mycorrhizal fungus is gathered from underneath forest trees, mixed with sand in a sack-lined pit and then sown with rice and beans to act as hosts for the developing VAM. After three months of maturation, you have a sack-full of VAM inoculum, ready to be applied to the young germinating seedlings — one teaspoon per plant. Inspecting the VAM inoculate at a Mitsinjo nursery. Experimental Conchopetalum madagascariense Sapindaceae seedlings ready for planting. Many groups in Madagascar swear by the VAM protocol and the visual results can be compelling, but as yet there have been no experiments in the country to rigorously test whether this method is actually effective. This lack of clear evidence is what prompted us to work on a series of experiments testing and perhaps refining the VAM protocol. We planted native tree seedlings with and without VAM inoculation to test whether this method increases seedling survival and growth in the degraded savanna around Ankafobe. Digging into the solid laterite and planting the experimental seedlings was hard work but our efforts were rewarded one day with the sighting of a family of 10 young Tenrecs Tenrec ecaudatus who ventured bravely out of the security of the forest to observe the progress. Four holes down, to go! Tom planting tree seedlings in the mud and rain. Tenrec ecaudatus inspecting the digging progress. The process of staining involved cooking up some rather nasty chemicals in our improvised laboratory — the kitchen — back in Tana. Our next project will be to replicate our VAM study in Ananalava , a humid site on the east coast that contrasts with the drier climate of the Malagasy Highlands. Repeating our study in different environments will help generalize our results and recommendations for people working across this heterogeneous island. Cyprien in our kitchen laboratory preparing an improvised stain to look for VAM vesicles. Driving north along the national highway from the capital, Antananarivo, one sees Eucalpytus trees growing near villages, as fuel and firewood plantations, but there is almost no natural forest. The few natural communities that remain represent vestiges of a former world. The view across the road from Ankafobe — nearly unbroken grassland. Our destination today is one such vestige — the Ankafobe reserve. Ankafobe is a tiny 33 hectare strip of native forest growing near the headwaters of a highland stream. Water-loving Pandanus trees demarcate the stream bed and provide fruits for several lemur species. A Souimanga Sunbird Cinnyris sovimanga flitters from tree to tree. Just outside of the forest, highly flammable grassland stretches to every horizon. Fragmented gallery forest at Ankafobe. Spikey Pandanus demarcate the streambed. Red strips in the background are incipient forest restoration plots, where the soil has been turned over prior to planting nitrogen-fixing shrubs and native trees. MBG staff and local villagers are working to restore forest on these bare hills, but it is not an easy task. Between clumps of grass is baked, orange laterite — rock hard soil bereft of life and nutrients. Tree seedlings planted in it grow slowly, or not at all. To improve seedling growth, MBG scientists are testing several strategies. One method is to turn over the soil and seed hearty legumes, whose symbiotic bacteria replenish soil nitrogen — a key ingredient in DNA. Leguminous shrubs, like this Tephrosia, have been planted on turned-over soil to replenish its fertility. Crotalaria, another green manure species. Last October, a wildfire jumped the double fire breaks surrounding Ankafobe and burned a piece of the forest. Two hundred people from the local village with a population of voluntarily and spontaneously fought the fire for three days. Their impressive response minimized damage to this small forest and raised hopes and excitement about working together on conservation going forward. A number of trees were completely burned up that had been growing in the savannah just outside of the forest. Unexpectedly, several of these resprouted from their base and from superficial roots at some distance from the main stem. Nearby, the burned grassland bloomed an interesting array of geophytic plants — particularly orchids — that were rarely observed in unburned grassland. These observations seem to support the hypothesis that at least part of the highland flora may be adapted to fire — a controversial idea that complicates the already challenging task of managing Ankafobe. Ankafobe is a rare gem; a green emerald that stands out from the surrounding countryside and supports at least one species found almost nowhere else. The reserve is also a special opportunity for ecological restoration. Chris Birkinshaw center and the Ankafobe restoration team after a rainy afternoon in the field. This post is contributed by Dr. We were also looking at the mosaic of grasslands, cloud forests, and lowland forests we find here from a restoration ecology perspective. The remarkable Horton Plains National Park is a mosaic of montane grassland ca. Horton Plains National Park, where the grassland — cloud forest mosaic shows some sharp edges where human land use has had impacts, but otherwise with high species diversity and landscape scale heterogeneity. Tree ferns Cyathea sp. But, the history of preservation in the highlands here goes back a lot further, to the days when the Isle was part of the British empire, along with all of India. According to information we gathered at the extraordinary, and poorly known Hakgala Botanic Gardens , the great English botanist and explorer Joseph Dalton Hooker had advised the British government to leave all montane forests above ft. What a great idea that was! It is too bad there were not enlightened laws on hunting of wild animals as well. One Scottish officer in colonial service in Sri Lanka bragged he had shot and killed over elephants in Horton Plains and nearby. Today, there are none left there and, so far as we could determine, no plans to reintroduce them from the other remarkable parks, including Yalla and Uda Walawe…. So, what is the significance of the absence of elephants in this park? And, what else can we learn from past regimes and historic periods in Sri Lanka? For starters, we discover that conservation, and respect for other organisms goes back much further than the 19th century. The land belongs to the peoples and the other beings and thou are only the guardian of it. So, what has Horton Plains National Park, with its grassland-forest mosaic, its tourists, and its absent elephants got to do with the Central highlands of Madagascar? For one thing, we can see that fire is a big ecological driver in both areas. The abundant arborescent Rhododendrons in Horton Plains tell a vivid tale in this regard. Rhododendron arboreum subsp. It appears to be fire-resistant and is the only tree species present in large areas of grasslands subject to fire. Horton Plains also has remarkable conservation value both for its biodiversity and the ecosystem services it provides to people. A big fire hit Horton Plains in , and there are serious invasions of two noxious, cosmopolitan weeds, namely Gorse and Bracken fern. Some control work is underway on the Gorse, but the Bracken fern is apparently not seen as being a problem. Rainbow trout were introduced in the 19 th c. Gorse Ulex europaeus — a spiny invasive introduced as an ornamental in the colonial period for its pretty yellow flowers and now a noxious weed throughout the highlands of Sri Lanka. Horton Plains grasslands infested with Bracken fern Pteridium aquilinum. Menu Skip to content Home About Archives. Search for:. Crested coua Coua cristata , one of nine species in the genus Coua — all of which are found only in Madagascar. Source: Katherine Culbertson et al. Black and white ruffed lemur Varecia variegata — a critically endangered seed disperser in eastern Madagascar. Photo credit: Tim Treuer. A mosaic of mature tropical dry forest and forest restoration at Berenty in southern Madagascar. Photo credit: Ariadna Mondragon Botero. Leaf tent made with a ubiquitous fern, Dicranopteris linearis , placed over a native tree seedling. Photo credit: Catherine Hill. Trees in the desert? Subscribe Subscribed. Natural History of Ecological Restoration. Sign me up. Already have a WordPress. Log in now. 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