Habitat-specific benthic metabolism in a Mediterranean-type intermittent stream
المؤلف | Sroczyńska, Katarzyna |
المؤلف | Claro, Marilia |
المؤلف | Range, Pedro |
المؤلف | Wasiak, Katarzyna |
المؤلف | Wojtal-Frankiewicz, Adrianna |
المؤلف | Ben-Hamadou, Radhouan |
المؤلف | Leitão, Francisco |
المؤلف | Chícharo, Luís |
تاريخ الإتاحة | 2021-09-08T06:49:43Z |
تاريخ النشر | 2016 |
اسم المنشور | Annales de Limnologie |
المصدر | Scopus |
الرقم المعياري الدولي للكتاب | 34088 |
الملخص | A modified flow-through chamber method was used to measure gross primary production (GPP), net primary production (NPP), community respiration (CR) and associated environmental variables in an intermittent Mediterranean-type stream in Southern Portugal. Three common types of in stream habitats were targeted: cobble (C), cobble covered with filamentous algae (C+A) and leaf litter (LL). NPP, GPP and CR differed significantly among all three habitats. GPP increased with chlorophyll a and, less strongly, with photosynthetic active radiation and, therefore, was highest in C+A habitat. The highest CR was in LL and its variation was best determined by ash-free dry mass (AFDM) of plant litter. Higher respiration in LL was related to heterotrophic activity and, to a lesser extent, to autotrophic respiration associated with periphyton. We observed a decrease of production efficiency of primary producers with AFDM in C+A and C habitats. Our results demonstrate that each habitat type should be considered as a discrete metabolic entity and that particular sets of environmental factors are responsible for habitat specific metabolic responses. Scaling up measurements from discrete habitat patches to the entire reach or stream should not be done by extrapolating the results of a single habitat type and will require quantification of habitat coverage, at the appropriate scale. EDP Sciences, 2016. |
راعي المشروع | The authors acknowledge David Harper, Victor Garcia Lopez, Carlos Sanchez Ure?a, Almudena L?pez Fern?ndez and Bogna Jacniacka for their contribution to experimental design and field work. We are also grateful to Tanner Williamson and Jennifer Taylor for their comments on the manuscript and English review. The authors also acknowledge anonymous referee for their valuable comments, which contributed to the manuscript improvement. This work was a part of the IMPACT project, funded by Foundation for Science and Technology (FCT) of Portugal (ER-IWRM/0003/2009). F. Leit?o was also funded by a scholarship from FCT (Reference SFRH/BPD/63935/2009). |
اللغة | en |
الناشر | EDP Sciences |
الموضوع | benthic habitats benthic metabolism light and dark incubations Quarteira River Basin |
النوع | Article |
الصفحات | 243-252 |
رقم المجلد | 52 |
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