scholarly journals On the connection between terrestrial and riparian vegetation: the role of storage partitioning in water-limited catchments

2016 ◽  
Vol 31 (2) ◽  
pp. 489-494 ◽  
Author(s):  
Saúl Arciniega-Esparza ◽  
José Agustín Breña-Naranjo ◽  
Peter A. Troch
Keyword(s):  
Riparian Vegetation

The role of a non-native tree in riparian vegetation expansion and channel narrowing along a dryland river

Ecohydrology ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. e1988 ◽  
Author(s):  
Michael L. Scott ◽  
Lindsay V. Reynolds ◽  
Patrick B. Shafroth ◽  
John R. Spence
Keyword(s):  
Riparian Vegetation ◽  
Channel Narrowing ◽  
Native Tree ◽  
Dryland River ◽  
Vegetation Expansion

scholarly journals Metacommunity patterns of Amazonian Odonata: the role of environmental gradients and major rivers

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6472 ◽  
Author(s):  
Fernanda Alves-Martins ◽  
Leandro Schlemmer Brasil ◽  
Leandro Juen ◽  
Paulo De Marco Jr ◽  
Juliana Stropp ◽  
...  
Keyword(s):  
Riparian Vegetation ◽  
Environmental Gradients ◽  
Spatial Scales ◽  
Distribution Patterns ◽  
Dispersal Ability ◽  
Third Order ◽  
Habitat Integrity ◽  
Biogeographic Region ◽  
Metacommunity Structure

BackgroundWe identified and classified damselfly (Zygoptera) and dragonfly (Anisoptera) metacommunities in Brazilian Amazonia, relating species distribution patterns to known biological gradients and biogeographical history. We expected a random distribution of both Zygoptera and Anisoptera within interfluves. At the Amazonian scale, we expected Anisoptera metacommunities to be randomly distributed due to their higher dispersal ability and large environmental tolerance. In contrast, we expected Zygoptera communities to exhibit a Clementsian pattern, limited by the large Amazonia rivers due to their low dispersal ability.MethodsWe used a dataset of 58 first-to-third order well-sampled streamlets in four Amazonian interfluves and applied an extension of the Elements of Metacommunity Structure (EMS) framework, in which we order Zygoptera and Anisoptera metacommunities by known spatial and biogeographic predictors.ResultsAt the Amazonian scale, both Zygoptera and Anisoptera presented a Clementsian pattern, driven by the same environmental and biogeographical predictors, namely biogeographic region (interfluve), annual mean temperature, habitat integrity and annual precipitation. At the interfluve scale, results were less consistent and only partially support our hypothesis. Zygoptera metacommunities at Guiana and Anisoptera metacommunities at Tapajós were classified as random, suggesting that neutral processes gain importance at smaller spatial scales.DiscussionOur findings were consistent with previous studies showing that environmental gradients and major rivers limit the distribution of Odonata communities, supporting that larger Amazonian rivers act as barriers for the dispersal of this group. In addition, the importance of habitat integrity indicates that intactness of riparian vegetation is an important filter shaping metacommunity structure of Amazonian stream Odonata.

Effects of riparian woody vegetation on EPT functional connectivity in Western Germany

2021 ◽  
Author(s):  
Andrés Peredo Arce ◽  
Martin Palt ◽  
Martin Schletterer ◽  
Jochem Kail
Keyword(s):  
Water Pollution ◽  
Functional Connectivity ◽  
Riparian Vegetation ◽  
Habitat Degradation ◽  
Riparian Forest ◽  
Landscape Connectivity ◽  
Riparian Forests ◽  
Coniferous Forests ◽  
Western Germany

<p>In the degraded European landscapes riparian corridors had have become key features to maintain connectivity between habitat patches for multitude of organisms. This role of riparian forests has been assessed from the purely structural point of view, to complex models specific for particular species or groups of species, from mammals to plants, from endangered to invasive species.</p><p>Dispersion is a key part of the lifecycle of EPTs (Ephemeroptera, Plecoptera and Trichoptera) as they live most of their lives as aquatic juveniles, being drifted downstream, and disperse back upstream when they become short-lived winged adults. These three families of aquatic macroinvertebrates are widely used as bioindicators because of their sensitivity to water pollution and habitat degradation, but little is known about how the riparian vegetation impacts their ability to disperse and recolonize. For example, riparian vegetation could help EPTs dispersion by protecting them from harsh weather conditions, or by helping them to orientate themselves by changing how the reflexion of the light on the water polarises.</p><p>Nevertheless, connectivity is not the only driver of the EPT community as other parameters can have a direct effect on the community composition. For example, water pollution is an important driver of the freshwater macroinvertebrate community and in locations where pollution is high is not expected to find almost any EPTs individual regardless of the landscape connectivity. Furthermore, other landscape features can hinder the role of riparian forests as corridors for being a barrier to EPT dispersion, like dams or coniferous forests.</p><p>In this study we compare the EPT communities on 120 pairs of sites, each pair located in the same river at 1 to 5 km distance, with different riparian vegetation conditions in Western Germany. The communities are characterised by their overall dispersion capacity using the Species Flying Propensity index (Sarremejane et al. 2017). The riparian vegetation is identified using areal images in the 10 meters and 30 meters buffer from the river.</p><p>We expect that riparian forest fragmentation will directly impact functional connectivity, and therefore, in locations with less fragmented riparian forests the EPT community will be mainly composed by weak dispersers (and <em>vice versa</em>). Nevertheless, covariates that can impact or mask this effect were taken into account: catchment land use, saprobic pollution, naturalness, hidromorphological hydromorphological degradation and also other features as coniferous forests or dams.</p>

Dynamique pluriannuelle des hyphomycètes aquatiques de l'Osse, rivière réalimentée du sud-ouest de la France

1997 ◽  
Vol 75 (1) ◽  
pp. 155-169 ◽  
Author(s):  
Anne-Marie Mothe-Jean-Louis
Keyword(s):  
Fungal Community ◽  
Riparian Vegetation ◽  
Aquatic Hyphomycetes ◽  
Nutrient Cycle ◽  
Vegetation Phenology ◽  
Vegetation Composition ◽  
Flood Intensity ◽  
Community Stucture ◽  
Ph Variations

The Osse River is a plain river (southwest of France) fed by the Neste Canal flowing from the Pyrénées. From 1988 to 1993, 46 samples taken from the foam in the river have shown a great temporal variability in densities of aquatic hyphomycete conidia, especially during winter. In 1992, the winter maximum density, related to the latest leaf breakdown, was 1522 conidia/mm3, and the winter minimum, in 1989, 2 conidia/mm3. This variability was much lower during spring. The water temperature varied between 3.0 and 23.5 °C. Several species of hyphomycetes appeared as extremely sensitive to temperature variations, whereas no significant correlation with pH variations was found. The effects of floods on the fungal community varied according to the flood intensity and timing and to the composition of the riparian vegetation. The role of the species composition and the phenology of the riparian vegetation on the fungal community stucture and dynamics was discussed in relation to leaf litter decomposition. This paper emphasizes the need to take into account the flood intensity for the study of hyphomycetes dynamics and the significant role of hydrodynamics in freshwater nutrient cycle. Key words: aquatic hyphomycetes, temperature, pH, vegetation phenology, vegetation composition, decomposition, hydrodynamic.

The Role of Riparian Vegetation in Protecting and Improving Chemical Water Quality in Streams1

2010 ◽  
Vol 46 (2) ◽  
pp. 261-277 ◽  
Author(s):  
Michael G. Dosskey ◽  
Philippe Vidon ◽  
Noel P. Gurwick ◽  
Craig J. Allan ◽  
Tim P. Duval ◽  
...  
Keyword(s):  
Water Quality ◽  
Riparian Vegetation ◽  
Chemical Water
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