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Browsing by Author "Jacobsen, Dean"

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Altitudinal distribution limits of aquatic macroinvertebrates: an experimental test in a tropical alpine stream.

Dangles, Olivier Jacques (03/07/2015)

Temperature and oxygen are recognised as the main drivers of altitudinal limits of species distributions. However, the two factors are linked, and both decrease with altitude, why their effects are difficult to disentangle. This ...
The altitudinal limit of Leptohyphes Eaton, 1882 and Lachlania Hagen, 1868 Ephemeroptera: Leptohyphidae, Oligoneuriidae) in Ecuadorian Andes streams: searching for mechanisms.

Crespo Pérez, Verónica, Andino, Patricio, Espinosa, Rodrigo, Dangles, Oliver, Jacobsen, Dean (16/03/2016)

We explored mechanisms determining the upper altitudinal limit of ephemeropterans from two different genera: Leptohyphes Eaton, 1882 (Leptohyphidae) and Lachlania n, 1868 (Oligoneuriidae). For this, we (1) surveyed the two ...
Biodiversity under threat in glacier-fed river systems.

Dangles, Olivier Jacques (2012)

Freshwater biodiversity is under threat across the globe1, with climate change being a significant contributor2,3. One impact of climate change is the rapid shrinking of glaciers4 , resulting in a reduction in glacial ...
Ecological responses to experimental glacier-runoff reduction in alpine rivers

Dangles, Olivier Jacques; Jacobsen, Dean (2016-06)

Glacier retreat is a worldwide phenomenon with important consequences for the hydrological cycle and downstream ecosystem structure and functioning. To determine the effects of glacier retreat on aquatic communities, we ...
Environmental harshness and global richness patterns in glacier-fed streams.

Dangles, Olivier Jacques (2012)

Aim: To test for a possible effect of environmental harshness on large-scale latitudinal and elevational patterns in taxon richness of macrofauna in arctic and alpine glacier-fed streams. Location: Svalbard (79° N), Iceland ...
Invertebrate metacommunity structure and dynamics in an Andean glacial stream network facing climate change

Jacobsen, Dean; Dangles, Olivier Jacques (26/08/2015)

Under the ongoing climate change, understanding the mechanisms structuring the spatial distribution of aquatic species in glacial stream networks is of critical importance to predict the response of aquatic biodiversity ...
Runoff and the longitudinal distribution of macroinvertebrates in a glacier-fed stream: implications for the effects of global warming.

Dangles, Olivier Jacques (2014)

The downstream pattern in benthic macroinvertebrate assemblages along glacier-fed streams is a result of decreasing glacial influence on environmental conditions. However, meltwater run-off shows temporal variation, reflected ...
Temporal variability in discharge and benthic macroinvertebrate assemblages in a tropical glacier-fed stream.

Dangles, Olivier Jacques (2014)

High flows are major disturbances in streams and cause benthic communities to vary temporally. Meltwater runoff in glacier-fed streams at temperateâ€”arctic latitudes primarily follows a strong seasonal pattern. In contrast, ...

Browsing by Author "Jacobsen, Dean"

Browsing by Author "Jacobsen, Dean"

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