Sign, strength and shape of stream fish-based metric responses to geo-climatic and human pressure gradients
| العنوان: | Sign, strength and shape of stream fish-based metric responses to geo-climatic and human pressure gradients |
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| المؤلفون: | Joaquín Solana-Gutiérrez, Diego García de Jalón, Carlos Alonso, Vanesa Martínez-Fernández |
| المصدر: | ECOLOGICAL INDICATORS, ISSN 1470-160X, 2019, Vol. 104 Archivo Digital UPM Universidad Politécnica de Madrid |
| بيانات النشر: | Elsevier BV, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 0106 biological sciences, Drainage basin, General Decision Sciences, Context (language use), Land cover, 010501 environmental sciences, 010603 evolutionary biology, 01 natural sciences, Ecology, Evolution, Behavior and Systematics, 0105 earth and related environmental sciences, 2. Zero hunger, geography, geography.geographical_feature_category, Ecology, business.industry, Ecological assessment, 15. Life on land, Regression, Medio Ambiente, Health assessment, 13. Climate action, Agriculture, Environmental science, Physical geography, Metric (unit), business |
| الوصف: | Efficient community indices and indicators are crucial for the adequate management and design of measures ensuring the ecosystem integrity. In this study we analyse the shape, sign and strength of the response of some biotic integrity indices and indicators of structure and function of fish communities along geo-climatic and human pressures gradients at catchment scale. To that purpose, >300 sites all over the Iberian Peninsula were characterized at the catchment scale by means of two anthropogenic drivers (agricultural and urban land proportion) and seven natural environmental descriptors covering geographical and climatic aspects. Regarding to fish-based metrics, a set of the most frequently used in stream health assessment studies have been selected, including taxonomic classic indicators, size related indicators and also recent multimetric indices created in the European context (WFD). We applied boosted regression trees that allow estimating the sign and strength of the response as well as considering non-linearity and impact thresholds. Our results show that the jointly contribution of anthropic drivers was lower than geo-climatic drivers. For most of indices and indicators, one single land cover contributed more markedly to the total deviance explained than the other, and they responded rather consistently to land-use variables, i.e., most of them responded negatively to the increase of anthropic use in the catchment. Size diversity, Fish Region Index (FRI) and maximum weight were those more sensible to agriculture land, while EFI+, mean weight, distinctness and FRI were those more sensitive to urban land. Regarding the shape of the response, urban land proportion affects normally at extremely low values, while agriculture land proportion induces smoother changes on a wider range. Our results may have practical implications, such as the selection of an efficient array of fish-based metrics to be included in ecological assessment and monitoring programs. |
| وصف الملف: | application/pdf |
| تدمد: | 1470-160X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c21ff09b327158994e627d4775a4de9 https://doi.org/10.1016/j.ecolind.2019.04.076 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....8c21ff09b327158994e627d4775a4de9 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1470160X |
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