نتایج جستجو برای: freshwater ecosystem

تعداد نتایج: 107604  

2005
C. A. Ferguson A. W. Bowman E. M. Scott L. Carvalho

The ecological consequences of climate change and its interaction with other environmental pressures, such as nutrient pollution, are little understood. For freshwater ecosystems, knowledge of these combined effects is required for water resource management and in particular for successful implementation of the European Community Water Framework Directive 2000, which requires that all surface w...

2006
Françoise Daverat Karin E. Limburg Isabel Thibault Jen-Chieh Shiao Julian J. Dodson François Caron Wann-Nian Tzeng Yoshiyuki Iizuka Håkan Wickström

Habitat use patterns of 3 species of temperate eels, Anguilla anguilla, A. japonica and A. rostrata, were investigated using otolith strontium:calcium ratio life history transects. Published and unpublished data from 6 sites (Canada, United States, Sweden, France, Taiwan and Japan) sampled across the geographical range of each eel species were compiled. Sr:Ca patterns indicated that the 3 speci...

2010
Simon Linke Eren Turak

The January 2011 Special Issue is the first major compilation of studies on systematic conservation planning in fresh waters (Turak & Linke, 2011). The papers in this Special Issue consolidate freshwater conservation planning as a field within both conservation science and freshwater ecology. This progress is largely a result of key advances in both disciplines (Linke, Turak & Nel, 2011). Many ...

2017
Toshiyuki Suzuki Koichi Shibukawa Masahiro Aizawa

A new freshwater goby, Rhinogobius mizunoi, is described based on six specimens from a freshwater stream in Shizuoka Prefecture, Japan. The species is distinguished from all congeneric species by the following combination of characters: I, 8 second dorsal-fin rays; 18–20 pectoral-fin rays; 13–18 predorsal scales; 33–35 longitudinal scales; 8 or 9 transverse scales; 10+16=26 vertebrae 26; first ...

Journal: :Ecology letters 2014
Neal T Halstead Taegan A McMahon Steve A Johnson Thomas R Raffel John M Romansic Patrick W Crumrine Jason R Rohr

Ecosystems are often exposed to mixtures of chemical contaminants, but the scientific community lacks a theoretical framework to predict the effects of mixtures on biodiversity and ecosystem properties. We conducted a freshwater mesocosm experiment to examine the effects of pairwise agrochemical mixtures [fertiliser, herbicide (atrazine), insecticide (malathion) and fungicide (chlorothalonil)] ...

2017
Alanna L. Lecher

Groundwater discharge, including submarine groundwater discharge, discharge to lakes and rivers, and subglacial discharge, affects freshwater and marine ecosystems across the globe. The implications for biogeochemistry include the transport of nutrients, metals, and gases to these systems. The Arctic is one region of the globe that has been understudied with respect to groundwater discharge unt...

Journal: :محیط زیست طبیعی 0
عبدالرضا کرباسی استادیار دانشکده تحصیلات تکمیلی محیط زیست دانشگاه تهران مهدی حیدری فارغ التحصیل قدرت ایاز فارغ التحصیل

estuaries are considered as highly dynamic ecosystem that include the mixing or transition zone between river freshwater and saline water from oceans and seas. estuaries are very important aquatic systems by preserving the coastal biota. flocculation of metals during mixing of freshwater with saline water can be considered as the most important estuarine processes. due to flocculation process, ...

Journal: :JAWRA Journal of the American Water Resources Association 2018

Journal: :Journal of Fisheries and Aquatic Science 2011

2016
Emma Grace Elizabeth Brooks Robert Alan Holland William Robert Thomas Darwall Felix Eigenbrod Derek Tittensor

AIM An often-invoked benefit of high biodiversity is the provision of ecosystem services. However, evidence for this is largely based on data from small-scale experimental studies of relationships between biodiversity and ecosystem function that may have little relevance to real-world systems. Here, large-scale biodiversity datasets are used to test the relationship between the yield of inland ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید