Markolf, Matthias

[["dc.bibliographiccitation.journal","International Journal of Primatology"],["dc.contributor.author","Markolf, Matthias"],["dc.contributor.author","Zinowsky, Max"],["dc.contributor.author","Keller, Judith Katharina"],["dc.contributor.author","Borys, Johannes"],["dc.contributor.author","Cillov, Ali"],["dc.contributor.author","Schülke, Oliver"],["dc.date.accessioned","2022-04-01T10:01:05Z"],["dc.date.available","2022-04-01T10:01:05Z"],["dc.date.issued","2022"],["dc.description.abstract","Abstract Developing new cost-effective methods for monitoring the distribution and abundance of species is essential for conservation biology. Passive acoustic monitoring (PAM) has long been used in marine mammals and has recently been postulated to be a promising method to improve monitoring of terrestrial wildlife as well. Because Madagascar’s lemurs are among the globally most threatened taxa, this study was designed to assess the applicability of an affordable and open-source PAM device to estimate the density of pale fork-marked lemurs ( Phaner pallescens ). Using 12 playback experiments and one fixed transect of four automated acoustic recorders during one night of the dry season in Kirindy Forest, we experimentally estimated the detection space for Phaner and other lemur vocalizations. Furthermore, we manually annotated more than 10,000 vocalizations of Phaner from a single location and used bout rates from previous studies to estimate density within the detection space. To truncate detections beyond 150 m, we applied a sound pressure level (SPL) threshold filtering out vocalizations below SPL 50 (dB re 20 μPa). During the dry season, vocalizations of Phaner can be detected with confidence beyond 150 m by a human listener. Within our fixed truncated detection area corresponding to an area of 0.07 km 2 (detection radius of 150 m), we estimated 10.5 bouts per hour corresponding to a density of Phaner of 38.6 individuals/km 2 . Our density estimates are in line with previous estimates based on individually marked animals conducted in the same area. Our findings suggest that PAM also could be combined with distance sampling methods to estimate densities. We conclude that PAM is a promising method to improve the monitoring and conservation of Phaner and many other vocally active primates."],["dc.identifier.doi","10.1007/s10764-022-00285-z"],["dc.identifier.pii","285"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/105596"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-530"],["dc.relation.eissn","1573-8604"],["dc.relation.issn","0164-0291"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Toward Passive Acoustic Monitoring of Lemurs: Using an Affordable Open-Source System to Monitor Phaner Vocal Activity and Density"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Conservation Science and Practice"],["dc.contributor.author","Kappeler, Peter M."],["dc.contributor.author","Markolf, Matthias"],["dc.contributor.author","Rasoloarison, Rodin M."],["dc.contributor.author","Fichtel, Claudia"],["dc.contributor.author","Durbin, Joanna"],["dc.date.accessioned","2022-09-01T09:50:40Z"],["dc.date.available","2022-09-01T09:50:40Z"],["dc.date.issued","2022"],["dc.identifier.doi","10.1111/csp2.12776"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/113772"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-597"],["dc.relation.eissn","2578-4854"],["dc.relation.issn","2578-4854"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Complex social and political factors threaten the world's smallest primate with extinction"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","37"],["dc.bibliographiccitation.journal","Lemur News"],["dc.bibliographiccitation.lastpage","40"],["dc.bibliographiccitation.volume","134"],["dc.contributor.author","Markolf, Matthias"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Rasoloarison, Rodin M."],["dc.date.accessioned","2017-11-15T12:09:21Z"],["dc.date.available","2017-11-15T12:09:21Z"],["dc.date.issued","2008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/10020"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1608-1439"],["dc.title","Distribution and conservation status of Mirza zaza"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","233"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","BMC Evolutionary Biology"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","Markolf, Matthias"],["dc.contributor.author","Rakotonirina, Hanitriniaina"],["dc.contributor.author","Fichtel, Claudia"],["dc.contributor.author","von Grumbkow, Phillip"],["dc.contributor.author","Brameier, Markus"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:20Z"],["dc.date.available","2017-09-07T11:48:20Z"],["dc.date.issued","2013"],["dc.description.abstract","Background: Species are the fundamental units in evolutionary biology. However, defining them as evolutionaryindependent lineages requires integration of several independent sources of information in order to develop robusthypotheses for taxonomic classification. Here, we exemplarily propose an integrative framework for speciesdelimitation in the “brown lemur complex” (BLC) of Madagascar, which consists of seven allopatric populations ofthe genus Eulemur (Primates: Lemuridae), which were sampled extensively across northern, eastern and westernMadagascar to collect fecal samples for DNA extraction as well as recordings of vocalizations. Our data base wasextended by including museum specimens with reliable identification and locality information for skull shape andpelage color analysis.Results: Between-group analyses of principal components revealed significant heterogeneity in skull shape, pelagecolor variation and loud calls across all seven populations. Furthermore, post-hoc statistical tests between pairs ofpopulations revealed considerable discordance among different data sets for different dyads. Despite a high degreeof incomplete lineage sorting among nuclear loci, significant exclusive ancestry was found for all populations,except for E. cinereiceps, based on one mitochondrial and three nuclear genetic loci.Conclusions: Using several independent lines of evidence, our results confirm the species status of the members ofthe BLC under the general lineage concept of species. More generally, the present analyses demonstrate theimportance and value of integrating different kinds of data in delimiting recently evolved radiations."],["dc.identifier.doi","10.1186/1471-2148-13-233"],["dc.identifier.gro","3150784"],["dc.identifier.pmid","24159931"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7574"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1471-2148"],["dc.subject","Species delimitation; Eulemur; Madagascar; Taxonomic inflation; Integrative taxonomy"],["dc.title","True lemurs…true species - species delimitation using multiple data sources in the brown lemur complex"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","259"],["dc.bibliographiccitation.lastpage","270"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Markolf, Matthias"],["dc.contributor.author","Lührs, Mia-Lana"],["dc.contributor.author","Thalmann, Urs"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.editor","Goodman, S. M."],["dc.contributor.editor","Gautier, L."],["dc.contributor.editor","Raherilalao, M. J."],["dc.date.accessioned","2017-11-15T12:24:30Z"],["dc.date.available","2017-11-15T12:24:30Z"],["dc.date.issued","2013"],["dc.description.abstract","Explaining the biodiversity and, in particular, the high levels of microendemism of primates in Madagascar has been a scientific challenge for many decades. A prerequisite to our understanding of lemur biogeography is high-resolution spatial data based on homogenous sampling effort across the island. Although the distribution of lemurs is comparatively well documented, some areas of Madagascar have been poorly surveyed. Among these zones is the large zone of microendemism between the Tsiribihina and the Betsiboka Rivers in western Madagascar. Here, we add new data on the distribution of several less known lemur species in this area. Two rapid lemur surveys in combination with hitherto unpublished information confirms the presence of at least 11 primate species from all five lemur families in the Beanka Forest - an isolated fragment of dry deciduous forest on limestone close to Maintirano. This level of species diversity is considerable and exceeds most other dry deciduous forests on the island. The specific determinations of Cheirogaleus sp. indet., Lepilemur cf. randrianasoli, Hapalemur cf. griseus ranomafanensis, and Mirza sp. in the Beanka Forest need to be supported by morphological and genetic data. Overall, lemur distribution in the surveyed zone of microendemism only partly supports the centers-of-endemism hypothesis. Given its extraordinarily high lemur diversity, the Beanka Forest deserves more attention from researchers studying lemur ecology and behavior. Current programs of Biodiversity Conservation Madagascar are important for the conservation of this forest area."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/10024"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.ispartof","The Beanka Forest, Melaky Region, western Madagascar"],["dc.title","Lemurs of the Beanka Forest, Melaky Region, western Madagascar"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","113"],["dc.bibliographiccitation.lastpage","115"],["dc.contributor.author","Markolf, Matthias"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Lewis, Rebecca"],["dc.contributor.author","Jacky, Ibrahim Antho Youssouf"],["dc.contributor.editor","Schwitzer, C."],["dc.contributor.editor","Mittermeier, R. A."],["dc.contributor.editor","Davies, N."],["dc.contributor.editor","Johnson, S."],["dc.contributor.editor","Ratsimbazafy, J."],["dc.contributor.editor","Razafindramanana, Louis E."],["dc.contributor.editor","Rajoebelina, S."],["dc.date.accessioned","2018-03-28T12:41:24Z"],["dc.date.available","2018-03-28T12:41:24Z"],["dc.date.issued","2013"],["dc.description.abstract","It is undeniable that Madagascar is a very special island for its exceptional wealth of biodiversity, its unique flora and fauna, which make our country one of the world’s foremost nature sanctuaries. Unfortunately, particularly over the last two decades, anthropogenic change has drastically affected Madagascar’s natural treasures. Every year, thousands of hectares of forest disappear due to logging and slash-and-burn agriculture. Most of the endemic fauna of Madagascar is forest-dependent, which means that once the forest becomes degraded or vanishes, the animals also disappear. Many species of endemic Malagasy reptiles, birds and mammals are currently on the verge of extinction due mainly to habitat loss and illegal exploitation. But I am happy to say that there are committed NGOs, institutions and individuals who are aware of the urgent need to set up strategies for environmental protection before it is too late. This is particularly true for these unique creatures, the lemurs, which symbolise the uniqueness of Madagascar’s biodiversity. During the past twenty years, almost every year, new species of these “denizens of the forest” have been discovered because of the fruitful collaboration of Malagasy and foreign primatologists, and there are probably still some hidden treasures in our forests. Almost 20% of the world’s primates are found in Madagascar. The loss of lemurs has implications for the entire country, and without efforts to better safeguard this precious national resource, all of Madagascar’s residents will ultimately suffer. I would like to take this opportunity to thank the Primate Specialist Group of the IUCN SSC for organising the Lemur Red- Listing and Conservation-Planning Workshop in July 2012 in Antananarivo. This meeting of 60 hard-working national and international primatologists agreed on a common strategy for the conservation of lemurs. The wide variety of both conservation and development projects in the different priority sites for lemur conservation is a key feature of this new strategy. Without doubt, using lemurs as “flagships” for public awareness and education campaigns will be crucial to stimulate general interest in conservation within Madagascar and to draw even more international attention to the importance of this country for conserving global biological diversity. In this regard, I do believe that the lemurs will continue to exercise their attractive powers over tourists: seeing lemurs in their natural habitats once in a lifetime is a dream for nature lovers and naturalists around the world. Notably, tourism contributes a substantial amount of foreign exchange to Madagascar’s economy. Conservation is a collective task that demands the involvement of all of us. Implementing this lemur conservation strategy will thus only be successful if we work together to face the challenges ahead. We will not let the lemurs vanish from our forests because we are not alone in our battle. Lemurs are a world heritage for future generations."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13188"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","IUCN SSC Primate Specialist Group, Bristol Conservation and Science Foundation, and Conservation International"],["dc.relation.isbn","978-1-934151-62-4"],["dc.relation.ispartof","Lemurs of Madagascar- A Strategy for their Conservation 2013-2016"],["dc.title","Kirindy- Ambadira (Central Menabe)"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]