Connectivity through allochthony: Reciprocal links between adjacent aquatic and terrestrial ecosystems in South Africa

Richoux, Nicole B; Moyo, Sydney; Chari, Lenin D; Bergamino, Leandro; Carassou, Laure; Dalu, Tatenda; Hean, Jeffrey W; Sikutshwa, Likho; Gininda, Simphiwe; Magoro, Mandla L; Perhar, Gurbir; Ni, Felicity; Villet, Martin H; Whitfield, Alan K; Parker, Daniel M; Froneman, P William; Arhonditsis, George; Craig, Adrian J F K

Title: Connectivity through allochthony: Reciprocal links between adjacent aquatic and terrestrial ecosystems in South Africa
Creator: Richoux, Nicole B, Moyo, Sydney, Chari, Lenin D, Bergamino, Leandro, Carassou, Laure, Dalu, Tatenda, Hean, Jeffrey W, Sikutshwa, Likho, Gininda, Simphiwe, Magoro, Mandla L, Perhar, Gurbir, Ni, Felicity, Villet, Martin H, Whitfield, Alan K, Parker, Daniel M, Froneman, P William, Arhonditsis, George, Craig, Adrian J F K
Subject: To be catalogued
Date: 2015
Type: text
Type: report
Identifier: http://hdl.handle.net/10962/438363
Identifier: vital:73454
Identifier: ISBN 978-1-4312-0679-7
Identifier: https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/2186-1-15.pdf
Description: An important aspect of the dynamics of nutrients and pollutants in natural systems is captured in the concept of allochthony, founded on the observation that nutrients and energy in a variety of forms are transferred between adjacent habitats, com-munities and ecosystems that are not routinely considered as connected. Different forms of nutrients and energy move across the conceptual boundaries of habitats via organisms’ activities or physical processes such as wind or water currents, and these transfers can represent important food subsidies. Such cross-partition ecolog-ical subsidies can augment the nutritional condition, biomass and biodiversity of communities, particularly where local production (or autochthony) alone may be inadequate to support local food webs. Furthermore, organic subsidies can influ-ence population dynamics, community interactions and ecosystem processes, and can represent dominant flux inputs in ecosystem budgets. Our intention was to ex-plore organic nutrient fluxes in relation to a primarily lotic (i.e. flowing) aquatic sys-tem at the scale of a hydrological catchment.
Format: 271 pages, pdf
Publisher: Water Research Commission
Language: English
Relation: Chari, L., Dalu, T., Villet, M.H. and Froneman, P.W., 2015. Connectivity through allochthony: Reciprocal links between adjacent aquatic and terrestrial ecosystems in South Africa
Rights: Publisher
Rights: Use of this resource is governed by the terms and conditions of the Water Research Commission Terms and Conditions of Use Statement (https://www.gov.za/terms-and-conditions-use-0)

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