scholarly journals Multiple stressors shape invertebrate assemblages and reduce their trophic niche: A case study in a regulated stream

2021 ◽  
Vol 773 ◽  
pp. 145061
Author(s):  
Sylvain Dolédec ◽  
Laurent Simon ◽  
Jérémie Blemus ◽  
Amandine Rigal ◽  
Joël Robin ◽  
...  
Keyword(s):  
Multiple Stressors ◽  
Trophic Niche ◽  
Regulated Stream ◽  
Invertebrate Assemblages

The effects of multiple stressors on the distribution of coastal benthic foraminifera: A case study from the Skagerrak-Baltic Sea region

2018 ◽  
Vol 139 ◽  
pp. 42-56 ◽  
Author(s):  
Laurie M. Charrieau ◽  
Helena L. Filipsson ◽  
Karl Ljung ◽  
Melissa Chierici ◽  
Karen Luise Knudsen ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Benthic Foraminifera ◽  
Multiple Stressors ◽  
Baltic Sea Region

scholarly journals Disentangling the Effects of Multiple Stressors on Large Rivers Using Benthic Invertebrates—A Study of Southeastern European Large Rivers with Implications for Management

Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 621 ◽  
Author(s):  
Gorazd Urbanič ◽  
Zlatko Mihaljević ◽  
Vesna Petkovska ◽  
Maja Pavlin Urbanič
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Multiple Stressors ◽  
Management Strategies ◽  
Specific Effect ◽  
Benthic Invertebrate ◽  
Large Rivers ◽  
Specific Effects ◽  
Land Use Effects ◽  
Invertebrate Assemblages

Predicting anthropogenic actions resulting in undesirable changes in aquatic systems is crucial for the development of effective and sustainable water management strategies. Due to the co-occurrence of stressors and a lack of appropriate data, the effects on large rivers are difficult to elucidate. To overcome this problem, we developed a partial canonical correspondence analyses (pCCA) model using 292 benthic invertebrate taxa from 104 sites that incorporated the effects of three stressors groups: hydromorphology, land use, and water quality. The data covered an environmental gradient from near-natural to heavily altered sites in five large rivers in Southeastern Europe. Prior to developing the multi-stressor model, we assessed the importance of natural characteristics on individual stressor groups. Stressors proved to be the dominant factors in shaping benthic invertebrate assemblages. The pCCA among stressor-groups showed that unique effects dominated over joint effects. Thus, benthic invertebrate assemblages were suitable for disentangling the specific effect of each of the three stressor groups. While the effects of hydromorphology were dominant, both water quality and land use effects were nearly equally important. Quantifying the specific effects of hydromorphological alterations, water quality, and land use will allow water managers to better understand how large rivers have changed and to better define expectations for ecosystem conditions in the future.

Case Study: Modeling Trout Population Response to River Management

2020 ◽  
pp. 17-28
Keyword(s):  
Size Structure ◽  
Multiple Stressors ◽  
River Management ◽  
Trade Off ◽  
Trout Population ◽  
Operation Rules ◽  
Virtual Laboratories ◽  
Key Characteristics ◽  
Opposing Effects

This chapter describes the key characteristics of “inSTREAM” and how it represents adaptive trade-off decisions, and provides the background needed to understand its design and complexity. The initial purpose of inSTREAM was to assess how alternative reservoir operation rules, which produce different patterns of flow and temperature in downstream waters, affect populations of sympatric trout species. It quickly became apparent that such a model would also be useful for a variety of management applications and for exploring more general ecological questions. InSTREAM has evolved into a family of models, each focused on specific salmonid communities and management problems. These models have also proved useful as virtual laboratories for exploring more general questions, of both management and theoretical importance, for which inclusion of adaptive trade-off behavior is probably critical. These questions have included how multiple stressors interact to affect populations; how opposing effects of increased turbidity—reduced feeding success and reduced predation risk—interact to affect populations; how habitat fragmentation affects population persistence and size structure; and how useful habitat selection models are for predicting population responses.

Biological responses of small yellow croaker (Larimichthys polyactis) to multiple stressors: a case study in the Yellow Sea, China

2017 ◽  
Vol 36 (10) ◽  
pp. 39-47 ◽  
Author(s):  
Xiujuan Shan ◽  
Xiansen Li ◽  
Tao Yang ◽  
S M Sharifuzzaman ◽  
Guozheng Zhang ◽  
...  
Keyword(s):  
Yellow Sea ◽  
Multiple Stressors ◽  
The Yellow Sea ◽  
Larimichthys Polyactis ◽  
Small Yellow Croaker ◽  
Biological Responses
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