Functional diversity in a fragmented landscape — Habitat alterations affect functional trait composition of frog assemblages in Madagascar
Anthropogenic habitat alterations cause biodiversity loss, which in turn negatively affects ecosystem functioning and services, and thus human well-being. To be able to consider ecosystem functioning in conservation actions, analyzing the effects of habitat alteration on functional diversity is esse...
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| Format: | Article |
| Language: | English |
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Elsevier
2017-04-01
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| Series: | Global Ecology and Conservation |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2351989416301433 |
| _version_ | 1811343512578293760 |
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| author | Jana C. Riemann Serge H. Ndriantsoa Mark-Oliver Rödel Julian Glos |
| author_facet | Jana C. Riemann Serge H. Ndriantsoa Mark-Oliver Rödel Julian Glos |
| author_sort | Jana C. Riemann |
| collection | DOAJ |
| description | Anthropogenic habitat alterations cause biodiversity loss, which in turn negatively affects ecosystem functioning and services, and thus human well-being. To be able to consider ecosystem functioning in conservation actions, analyzing the effects of habitat alteration on functional diversity is essential. Some altered habitats can maintain a significant part of regional biodiversity, however, functional diversity information in altered habitats is so far mostly lacking. We compared functional richness and functional β-diversity based on resource-use traits of frogs between three land-use categories in a rainforest ecosystem in Madagascar. Land-use categories represent a habitat alteration gradient ranging from continuous forest over forest fragments to matrix habitats including different agricultures. Our study revealed distinct changes in resource-use trait composition and complex patterns in the relationship between species richness and functional richness. Thus, the functional structure of frog assemblages changed due to habitat alterations. However, altered habitats likely provide different, rather than fewer functions compared to intact forest. Streams in all land-use categories were the functionally richest habitats, and thus important for ecosystem functioning. Species richness was one, but not the only driver of functional richness in our system. Functional clustering, potentially due to environmental filters depending on resource availability, was caused by anthropogenic and natural drivers. Our study shows that, even in systems where fragmented landscapes still maintain high species diversity, functional diversity can be altered in human altered habitats, which may affect ecosystem processes like productivity, nutrient cycling, and energy flows. |
| first_indexed | 2024-04-13T19:31:34Z |
| format | Article |
| id | doaj.art-bebb41a797b04876b676a3609db886e0 |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-04-13T19:31:34Z |
| publishDate | 2017-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Global Ecology and Conservation |
| spelling | doaj.art-bebb41a797b04876b676a3609db886e02022-12-22T02:33:11ZengElsevierGlobal Ecology and Conservation2351-98942017-04-0110C17318310.1016/j.gecco.2017.03.005Functional diversity in a fragmented landscape — Habitat alterations affect functional trait composition of frog assemblages in MadagascarJana C. Riemann0Serge H. Ndriantsoa1Mark-Oliver Rödel2Julian Glos3Zoological Institute, Animal Ecology and Conservation, University of Hamburg, Martin-Luther-King Platz 3, 20146 Hamburg, GermanyMention Zoologie et Biodiversité Animale, Faculté des Sciences, Université d’Antananarivo, Antananarivo 101, MadagascarMuseum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstr. 43, 10115 Berlin, GermanyZoological Institute, Animal Ecology and Conservation, University of Hamburg, Martin-Luther-King Platz 3, 20146 Hamburg, GermanyAnthropogenic habitat alterations cause biodiversity loss, which in turn negatively affects ecosystem functioning and services, and thus human well-being. To be able to consider ecosystem functioning in conservation actions, analyzing the effects of habitat alteration on functional diversity is essential. Some altered habitats can maintain a significant part of regional biodiversity, however, functional diversity information in altered habitats is so far mostly lacking. We compared functional richness and functional β-diversity based on resource-use traits of frogs between three land-use categories in a rainforest ecosystem in Madagascar. Land-use categories represent a habitat alteration gradient ranging from continuous forest over forest fragments to matrix habitats including different agricultures. Our study revealed distinct changes in resource-use trait composition and complex patterns in the relationship between species richness and functional richness. Thus, the functional structure of frog assemblages changed due to habitat alterations. However, altered habitats likely provide different, rather than fewer functions compared to intact forest. Streams in all land-use categories were the functionally richest habitats, and thus important for ecosystem functioning. Species richness was one, but not the only driver of functional richness in our system. Functional clustering, potentially due to environmental filters depending on resource availability, was caused by anthropogenic and natural drivers. Our study shows that, even in systems where fragmented landscapes still maintain high species diversity, functional diversity can be altered in human altered habitats, which may affect ecosystem processes like productivity, nutrient cycling, and energy flows.http://www.sciencedirect.com/science/article/pii/S2351989416301433Functional clusteringFunctional ß-diversityEcosystem processesEcosystem functioningRainforest fragmentationAmphibian conservation |
| spellingShingle | Jana C. Riemann Serge H. Ndriantsoa Mark-Oliver Rödel Julian Glos Functional diversity in a fragmented landscape — Habitat alterations affect functional trait composition of frog assemblages in Madagascar Global Ecology and Conservation Functional clustering Functional ß-diversity Ecosystem processes Ecosystem functioning Rainforest fragmentation Amphibian conservation |
| title | Functional diversity in a fragmented landscape — Habitat alterations affect functional trait composition of frog assemblages in Madagascar |
| title_full | Functional diversity in a fragmented landscape — Habitat alterations affect functional trait composition of frog assemblages in Madagascar |
| title_fullStr | Functional diversity in a fragmented landscape — Habitat alterations affect functional trait composition of frog assemblages in Madagascar |
| title_full_unstemmed | Functional diversity in a fragmented landscape — Habitat alterations affect functional trait composition of frog assemblages in Madagascar |
| title_short | Functional diversity in a fragmented landscape — Habitat alterations affect functional trait composition of frog assemblages in Madagascar |
| title_sort | functional diversity in a fragmented landscape habitat alterations affect functional trait composition of frog assemblages in madagascar |
| topic | Functional clustering Functional ß-diversity Ecosystem processes Ecosystem functioning Rainforest fragmentation Amphibian conservation |
| url | http://www.sciencedirect.com/science/article/pii/S2351989416301433 |
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