scholarly journals A newly developed dispersal metric indicates the succession of benthic invertebrates in restored rivers

2016 ◽  
Author(s):  
Fengqing Li ◽  
Andrea Sundermann ◽  
Stefan Stoll ◽  
Peter Haase
Keyword(s):  
Benthic Invertebrates ◽  
Adult Life ◽  
Benthic Invertebrate ◽  
Early Years ◽  
First Year ◽  
Dispersal Capacity ◽  
Invertebrate Communities ◽  
Temporal Succession ◽  
Community Data ◽  
Benthic Invertebrate Communities

Dispersal capacity plays a fundamental role in the riverine benthic invertebrate colonization of new habitats that emerges following flash floods or restoration. However, an appropriate measure of dispersal capacity for benthic invertebrates is still lacking. The dispersal of benthic invertebrates occurs mainly during the aquatic (larval) and aerial (adult) life stages, and the dispersal of each stage can be further subdivided into active and passive modes. Based on these four possible dispersal modes, we first developed a metric (which is very similar to the well-known and widely used saprobic index) to estimate the dispersal capacity for 528 benthic invertebrate taxa by incorporating a weight for each mode. Second, we tested this metric using benthic invertebrate community data from a) 23 large restored river sites with improvements of river bottom habitats dating back 1 to 10 years, b) 23 unrestored sites, and c) 298 adjacent surrounding sites in the low mountain and lowland areas of Germany. We hypothesize that our metric will reflect the temporal succession process of benthic invertebrate communities colonizing the restored sites, whereas no temporal changes are expected in the unrestored and surrounding sites. By applying our metric to these three river treatment categories, we found that the average dispersal capacity of benthic invertebrate communities in the restored sites significantly decreased in the early years following restoration, whereas there were no changes in either the unrestored or the surrounding sites. After all taxa had been divided into quartiles representing weak to strong dispersers, this pattern became even more obvious; strong dispersers colonized the restored sites during the first year after restoration and then significantly decreased over time, whereas weak dispersers continued to increase. The successful application of our metric to river restoration might be promising in further applications of this metric, for example, in assessments of rivers or metacommunity structure.

scholarly journals A newly developed dispersal capacity metric indicates succession of benthic invertebrates in restored rivers

2015 ◽  
Author(s):  
Fengqing Li ◽  
Andrea Sundermann ◽  
Stefan Stoll ◽  
Peter Haase
Keyword(s):  
Benthic Invertebrates ◽  
Adult Life ◽  
Benthic Invertebrate ◽  
Early Years ◽  
First Year ◽  
Dispersal Capacity ◽  
Invertebrate Communities ◽  
Temporal Succession ◽  
Community Data ◽  
Benthic Invertebrate Communities

Dispersal capacity plays a fundamental role in riverine benthic invertebrates’ colonization of new habitats that emerge following flash floods or restoration. However, an appropriate measure of dispersal capacity for benthic invertebrates is still lacking. Dispersal of benthic invertebrates occurs mainly during the aquatic (larvae) and aerial (adult) life stages, and each can be further subdivided into active and passive modes. Based on these totally four dispersal modes, we firstly developed a simple metric to estimate dispersal capacity for 528 benthic invertebrate taxa by incorporating weight for each mode. Secondly we tested this metric using benthic invertebrate community data from a) 23 restored river sites all involving an improvement of river bottom habitats dating back 1 to 10 years, b) 23 unrestored sites, and c) 298 adjacent surrounding sites in the low mountain and lowland areas of Germany. We hypothesize that our metric will reflect the temporal succession process of benthic invertebrate communities colonizing the restored sites, while no temporal changes are expected in the unrestored and surrounding sites. By applying our metric to these three river treatment categories, we found that the average dispersal capacity of benthic invertebrate communities in the restored sites decreased significantly within the early years following restoration, while there were no changes in both unrestored and surrounding sites. After dividing all taxa into quartiles representing weak to strong dispersers, this pattern became even more obvious; strong dispersers colonized the restored sites during the first year after restoration and then significantly decreased over time, while weak dispersers continuously increased. The successful application of our metric to river restoration might be promising to further apply this metric for example in river assessments or meta-community structure.

scholarly journals A newly developed dispersal metric indicates the succession of benthic invertebrates in restored rivers

2016 ◽  
Author(s):  
Fengqing Li ◽  
Andrea Sundermann ◽  
Stefan Stoll ◽  
Peter Haase
Keyword(s):  
Benthic Invertebrates ◽  
Adult Life ◽  
Benthic Invertebrate ◽  
Early Years ◽  
First Year ◽  
Dispersal Capacity ◽  
Invertebrate Communities ◽  
Temporal Succession ◽  
Community Data ◽  
Benthic Invertebrate Communities

Dispersal capacity plays a fundamental role in the riverine benthic invertebrate colonization of new habitats that emerges following flash floods or restoration. However, an appropriate measure of dispersal capacity for benthic invertebrates is still lacking. The dispersal of benthic invertebrates occurs mainly during the aquatic (larval) and aerial (adult) life stages, and the dispersal of each stage can be further subdivided into active and passive modes. Based on these four possible dispersal modes, we first developed a metric (which is very similar to the well-known and widely used saprobic index) to estimate the dispersal capacity for 528 benthic invertebrate taxa by incorporating a weight for each mode. Second, we tested this metric using benthic invertebrate community data from a) 23 large restored river sites with improvements of river bottom habitats dating back 1 to 10 years, b) 23 unrestored sites, and c) 298 adjacent surrounding sites in the low mountain and lowland areas of Germany. We hypothesize that our metric will reflect the temporal succession process of benthic invertebrate communities colonizing the restored sites, whereas no temporal changes are expected in the unrestored and surrounding sites. By applying our metric to these three river treatment categories, we found that the average dispersal capacity of benthic invertebrate communities in the restored sites significantly decreased in the early years following restoration, whereas there were no changes in either the unrestored or the surrounding sites. After all taxa had been divided into quartiles representing weak to strong dispersers, this pattern became even more obvious; strong dispersers colonized the restored sites during the first year after restoration and then significantly decreased over time, whereas weak dispersers continued to increase. The successful application of our metric to river restoration might be promising in further applications of this metric, for example, in assessments of rivers or metacommunity structure.

scholarly journals A newly developed dispersal capacity metric indicates the succession of benthic invertebrates in restored rivers

2015 ◽  
Author(s):  
Fengqing Li ◽  
Andrea Sundermann ◽  
Stefan Stoll ◽  
Peter Haase
Keyword(s):  
Benthic Invertebrates ◽  
Life Stage ◽  
Adult Life ◽  
Benthic Invertebrate ◽  
Early Years ◽  
First Year ◽  
Dispersal Capacity ◽  
Invertebrate Communities ◽  
Temporal Succession ◽  
Benthic Invertebrate Communities

Dispersal capacity plays a fundamental role in the riverine benthic invertebrate colonization of new habitats that emerges following flash floods or restoration. However, an appropriate measure of dispersal capacity for benthic invertebrates is still lacking. The dispersal of benthic invertebrates occurs mainly during the aquatic (larval) and aerial (adult) life stages, and the dispersal of each life stage can be further subdivided into active and passive modes. Based on these four possible dispersal modes, we first developed a simple metric to estimate the dispersal capacity for 528 benthic invertebrate taxa by incorporating a weight for each mode. Second, we tested this metric using benthic invertebrate community data from a) 23 large restored river sites with improvements of river bottom habitats dating back 1 to 10 years, b) 23 unrestored sites, and c) 298 adjacent surrounding sites in the low mountain and lowland areas of Germany. We hypothesize that our metric will reflect the temporal succession process of benthic invertebrate communities colonizing the restored sites, whereas no temporal changes are expected in the unrestored and surrounding sites. By applying our metric to these three river treatment categories, we found that the average dispersal capacity of benthic invertebrate communities in the restored sites significantly decreased in the early years following restoration, whereas there were no changes in either the unrestored or the surrounding sites. After all taxa had been divided into quartiles representing weak to strong dispersers, this pattern became even more obvious; strong dispersers colonized the restored sites during the first year after restoration and then significantly decreased over time, whereas weak dispersers continued to increase. The successful application of our metric to river restoration might be promising in further applications of this metric, for example, in assessments of rivers or metacommunity structure.

Response of benthic invertebrate communities to a land use gradient in tropical highland streams in Nigeria

2018 ◽  
Vol 26 (1) ◽  
pp. 53-76
Author(s):  
D.M. Umar ◽  
J.S. Harding ◽  
H.M. Chapman
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
Particulate Organic Matter ◽  
Benthic Invertebrates ◽  
Benthic Invertebrate ◽  
Invertebrate Communities ◽  
Physico Chemical ◽  
Forest Streams ◽  
Highland Streams ◽  
Benthic Invertebrate Communities

Benthic invertebrate communities have been shown to respond to habitat  degradation as a result of land use changes. Although these changes have been well documented in temperate regions, their effects in the tropics have been poorly documented particularly where land use activities differ markedly (e.g., tea, maize and plantations). A survey 55 1st and 2nd order highland tropical streams, across four land use categories, ranging from continuous tropical montane rain forest to intensive crops and pasture. Streams were sampled in the tropical dry season (October–March) for physico-chemical parameters and components of the biological community, (i.e., fine particulate organic matter [FPOM], coarse particulate organic matter [CPOM], algae and benthic invertebrates). Catchment riparian conditions and human water use activities were used to generate a multivariate land use intensity gradient score. Temperatures in pasture streams were warmer than forest streams (up to 25oC) and dissolved oxygen levels frequently low (15–79%). However, physico-chemical conditions did not show any clear patterns across land uses categories. In contrast, benthic invertebrate communities showed strong response with the highest taxonomic diversity in continuous forest streams (mean 20 taxa) and the lowest in streams with intensive crops (e.g., cabbage crops, mean 8 taxa). Marked changes were found in invertebrate communities with several taxa occurring primarily in forested streams (e.g., the mayflies Heptageniidae and Oligoneuriidae and brachyuran crabs). Tropical land use farming (e.g., tea, maize, cabbage) have significant impacts on the benthic invertebrate assemblages of highland streams in Nigeria. However, not all crop and plantation streams had highly impacted communities because some have wider riparian buffer zones. This study further highlight the importance of conservation and management of montane forest fragments in these regionsKeywords: Tropical, Nigeria, highland, benthic invertebrates, land use, degradation

A survey of benthic invertebrate communities in native and non-native seagrass beds in St. John, USVI

2021 ◽  
Vol 175 ◽  
pp. 103448
Author(s):  
Stephanie R. Valdez ◽  
Elizabeth C. Shaver ◽  
Danielle A. Keller ◽  
Joseph P. Morton ◽  
Y. Stacy Zhang ◽  
...  
Keyword(s):  
Benthic Invertebrate ◽  
Seagrass Beds ◽  
Invertebrate Communities ◽  
Benthic Invertebrate Communities

Assessing Contamination in Great Lakes Sediments Using Benthic Invertebrate Communities and the Sediment Quality Triad Approach

1996 ◽  
Vol 22 (3) ◽  
pp. 565-583 ◽  
Author(s):  
Timothy J. Canfield ◽  
F. James Dwyer ◽  
James F. Fairchild ◽  
Pamela S. Haverland ◽  
Christopher G. Ingersoll ◽  
...  
Keyword(s):  
Great Lakes ◽  
Sediment Quality ◽  
Benthic Invertebrate ◽  
Sediment Quality Triad ◽  
Invertebrate Communities ◽  
Benthic Invertebrate Communities
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