Macroinvertebrate abundance in montane tropical streams of varying land-use, Ecuador
Macroinvertebrate abundance in montane tropical streams of varying land-use, Ecuador
Despite the importance of tropical montane cloud forest streams, studies investigating aquatic communities in these regions are rare and knowledge on the driving factors of community structure is missing. The objectives of this study therefore were to understand how land-use influences habitat structure and macroinvertebrate communities in cloud forest streams of southern Ecuador. We evaluated these relationships in headwater streams with variable land cover, using multivariate statistics to identify relationships between key habitat variables and assemblage structure, and to resolve differences in composition among sites. Results show that shading intensity, substrate type and pH were the environmental parameters most closely related to variation in community composition observed among sites. In addition, macroinvertebrate density and partly diversity was lower in forested sites, possibly because the pH in forested streams lowered to almost 5 during spates. Standard bioindicator metrics were unable to detect the changes in assemblage structure between disturbed and forested streams. In general, our results indicate that tropical montane headwater streams are complex and heterogeneous ecosystems with low invertebrate densities. We also found that some amount of disturbance, i.e. patchy deforestation, can lead at least initially to an increase in macroinvertebrate taxa richness of these streams.
Supplement to: Bücker, Amelie; Sondermann, Martin; Frede, Hans-Georg; Breuer, Lutz (2010): The influence of land-use on macroinvertebrate communities in montane tropical streams - a case study from Ecuador. Fundamental and Applied Limnology, 177(4), 267-282
This work was funded by the Deutsche Forschungsgemeinschaft DFG in the frame of the project FOR816 "Biodiversity and Sustainable Management of a Megadiverse Mountain Ecosystem in South Ecuador".
Triplectes spp, Taxa per area, Mortoniella spp., Mortoniella spp, Haplohyphes spp, Temperature, water, Helicopsyche spp., Flow velocity, Shading, Land Use, Leptohyphes spp, cover, Sample code/label, River, Limnocoris spp, pH, Atopsyche spp., Weilheim, Anchytarsus spp, Helicopsyche spp, Grumichella spp, Pyralidae, larvae, Tipulidae, Conductivity and pH meter, pH/Cond 340i (WTW, Weilheim), Titration, Anchytarsus spp., Argia spp, Hexatoma spp., Geosciences, Atanatolica spp., Macrostemum spp., Sialis spp, water, Andesiops spp., Cernotina spp, macroinvertebrates, larvae, Simuliidae, larvae, Conductivity and pH meter, Hexatoma spp, Planariidae, Gravel, cover, Nectopsyche spp, DATE TIME, Flow velocity, water, Haplohyphes spp., Cernotina spp., Hetaerina spp, Leptonema spp, Phylloicus spp, Psephenops spp, Corydalus spp., Baetodes spp., Nectopsyche spp., Counting >500 µm fraction, Counting 500 µm fraction, Lakes & Rivers, Land Surface, Atopsyche spp, Chimarra spp., Oxygen, Lakes & Rivers, Land use, Individuals per area, LATITUDE, Chironomidae, larvae, Oxygen meter Oxi320 with a CellOx325 sensor (WTW, Weilheim), Elmidae, Limnocoris spp., Leptohyphes spp., Anacroneuria spp., Alkalinity, Lakes Rivers, Macrostemum spp, Psephenops spp., Width, Sand, Weighted, Simuliidae, Diptera indeterminata, Alkalinity, total, total, Andesiops spp, Temperature, Sample code label, Smicridea spp, mountains, Weighed (scale), Farrodes spp, Visual observation, pH Cond 340i WTW, Organic matter, Corydalus spp, Natural Sciences, Dineutus spp., Triplectes spp., Marilia spp, Baetodes spp, Tipulidae, larvae, Gravel, Anacroneuria spp, Stones, Polythore spp., Polythore spp, Chironomidae, Human Dimensions, Phylloicus spp., Dineutus spp, Grumichella spp., Oxygen meter Oxi320 with a CellOx325 sensor WTW, Argia spp., Pyralidae, Hetaerina spp., LONGITUDE, Atanatolica spp, Stones, cover, Chimarra spp, Conductivity, DEPTH, water, Flow meter, Sampling river, Sialis spp., Thraulodes spp, Elevation 2, Smicridea spp., Farrodes spp., Marilia spp., DATE/TIME, Thraulodes spp., DEPTH, Leptonema spp., Environmental Research, Counting >500 µm fraction
Triplectes spp, Taxa per area, Mortoniella spp., Mortoniella spp, Haplohyphes spp, Temperature, water, Helicopsyche spp., Flow velocity, Shading, Land Use, Leptohyphes spp, cover, Sample code/label, River, Limnocoris spp, pH, Atopsyche spp., Weilheim, Anchytarsus spp, Helicopsyche spp, Grumichella spp, Pyralidae, larvae, Tipulidae, Conductivity and pH meter, pH/Cond 340i (WTW, Weilheim), Titration, Anchytarsus spp., Argia spp, Hexatoma spp., Geosciences, Atanatolica spp., Macrostemum spp., Sialis spp, water, Andesiops spp., Cernotina spp, macroinvertebrates, larvae, Simuliidae, larvae, Conductivity and pH meter, Hexatoma spp, Planariidae, Gravel, cover, Nectopsyche spp, DATE TIME, Flow velocity, water, Haplohyphes spp., Cernotina spp., Hetaerina spp, Leptonema spp, Phylloicus spp, Psephenops spp, Corydalus spp., Baetodes spp., Nectopsyche spp., Counting >500 µm fraction, Counting 500 µm fraction, Lakes & Rivers, Land Surface, Atopsyche spp, Chimarra spp., Oxygen, Lakes & Rivers, Land use, Individuals per area, LATITUDE, Chironomidae, larvae, Oxygen meter Oxi320 with a CellOx325 sensor (WTW, Weilheim), Elmidae, Limnocoris spp., Leptohyphes spp., Anacroneuria spp., Alkalinity, Lakes Rivers, Macrostemum spp, Psephenops spp., Width, Sand, Weighted, Simuliidae, Diptera indeterminata, Alkalinity, total, total, Andesiops spp, Temperature, Sample code label, Smicridea spp, mountains, Weighed (scale), Farrodes spp, Visual observation, pH Cond 340i WTW, Organic matter, Corydalus spp, Natural Sciences, Dineutus spp., Triplectes spp., Marilia spp, Baetodes spp, Tipulidae, larvae, Gravel, Anacroneuria spp, Stones, Polythore spp., Polythore spp, Chironomidae, Human Dimensions, Phylloicus spp., Dineutus spp, Grumichella spp., Oxygen meter Oxi320 with a CellOx325 sensor WTW, Argia spp., Pyralidae, Hetaerina spp., LONGITUDE, Atanatolica spp, Stones, cover, Chimarra spp, Conductivity, DEPTH, water, Flow meter, Sampling river, Sialis spp., Thraulodes spp, Elevation 2, Smicridea spp., Farrodes spp., Marilia spp., DATE/TIME, Thraulodes spp., DEPTH, Leptonema spp., Environmental Research, Counting >500 µm fraction
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