Fish predation alters benthic, but not emerging, insects across whole pools of an intermittent stream

2013 ◽  
Vol 32 (2) ◽  
pp. 438-449 ◽  
Author(s):  
Jeff S. Wesner
Keyword(s):  
Fish Predation ◽  
Intermittent Stream ◽  
Emerging Insects

Characteristics of Macroinvertebrates Food Webs affected by Dry Channel in an Intermittent Stream System of the Echi River in Japan

2015 ◽  
Vol 6 (3) ◽  
pp. 167
Author(s):  
Hyun-Seon Shin ◽  
Amahashi Nozomi ◽  
Young-Eun Na ◽  
Hong-Hyun Park ◽  
Kwang-Jin Cho ◽  
...  
Keyword(s):  
Food Webs ◽  
Intermittent Stream ◽  
Stream System

scholarly journals Desiccation time and rainfall control gaseous carbon fluxes in an intermittent stream

2021 ◽  
Author(s):  
Maria Isabel Arce ◽  
Mia M. Bengtsson ◽  
Daniel von Schiller ◽  
Dominik Zak ◽  
Jana Täumer ◽  
...  
Keyword(s):  
Water Soluble ◽  
Intermittent Flow ◽  
Dry Period ◽  
Intermittent Stream ◽  
Aerobic Activity ◽  
Water Soluble Organic Carbon ◽  
Soluble Organic Carbon ◽  
Microbial C ◽  
Global Biogeochemical Cycles ◽  
The Impact

AbstractDroughts are recognized to impact global biogeochemical cycles. However, the implication of desiccation on in-stream carbon (C) cycling is not well understood yet. We subjected sediments from a lowland, organic rich intermittent stream to experimental desiccation over a 9-week-period to investigate temporal changes in microbial functional traits in relation to their redox requirements, carbon dioxide (CO2) and methane (CH4) fluxes and water-soluble organic carbon (WSOC). Concurrently, the implications of rewetting by simulated short rainfalls (4 and 21 mm) on gaseous C fluxes were tested. Early desiccation triggered dynamic fluxes of CO2 and CH4 with peak values of 383 and 30 mg C m−2 h−1 (mean ± SD), respectively, likely in response to enhanced aerobic mineralization and accelerated evasion. At longer desiccation, CH4 dropped abruptly, likely because of reduced abundance of anaerobic microbial traits. The CO2 fluxes ceased later, suggesting aerobic activity was constrained only by extended desiccation over time. We found that rainfall boosted fluxes of CO2, which were modulated by rainfall size and the preceding desiccation time. Desiccation also reduced the amount of WSOC and the proportion of labile compounds leaching from sediment. It remains questionable to which extent changes of the sediment C pool are influenced by respiration processes, microbial C uptake and cell lysis due to drying-rewetting cycles. We highlight that the severity of the dry period, which is controlled by its duration and the presence of precipitation events, needs detailed consideration to estimate the impact of intermittent flow on global riverine C fluxes.

Freshwater snail responses to fish predation integrate phenotypic plasticity and local adaptation

2020 ◽  
Vol 54 (1) ◽  
pp. 309-322 ◽  
Author(s):  
Scott R. Goeppner ◽  
Maggie E. Roberts ◽  
Lynne E. Beaty ◽  
Barney Luttbeg
Keyword(s):  
Phenotypic Plasticity ◽  
Local Adaptation ◽  
Fish Predation ◽  
Freshwater Snail

scholarly journals Benthic Productivity as Influenced by Fish Predation*

1956 ◽  
Vol 1 (3) ◽  
pp. 162-175 ◽  
Author(s):  
DON W. HAYNE ◽  
ROBERT C. BALL
Keyword(s):  
Fish Predation ◽  
Benthic Productivity

Male-biased sex ratio in Argulus canadensis Wilson, 1916 (Crustacea: Branchiura) ectoparasitic on sticklebacks

1989 ◽  
Vol 67 (8) ◽  
pp. 2078-2080 ◽  
Author(s):  
Robert Poulin ◽  
Gerard J. FitzGerald
Keyword(s):  
Salt Marsh ◽  
Sex Ratio ◽  
Laboratory Experiments ◽  
Fish Predation ◽  
Reproductive Behaviour ◽  
Egg Deposition ◽  
Alternative Hypotheses ◽  
Biased Sex Ratio ◽  
The Difference ◽  
Fish Hosts

Females of the ectoparasitic crustacean Argulus canadensis must leave their fish hosts at least temporarily to deposit their eggs on the substrate. To test the hypothesis that this difference in reproductive behaviour between the two sexes could result in male-biased sex ratios on their stickleback hosts, we sampled sticklebacks in tide pools of a Quebec salt marsh from early July to early September 1986. During this period, fish harboured significantly more male than female A. canadensis. Laboratory experiments were done to test two alternative hypotheses offered to explain this biased sex ratio. The first hypothesis was that male A. canadensis were more successful than females in attacking their stickleback hosts; however, we found no differences in attack success on their hosts between the two parasite sexes. The second hypothesis was that sticklebacks ate more female than male A. canadensis. Although males were less vulnerable to fish predation than females, the difference was not significant. We conclude that sexual differences in reproductive behaviour, i.e., egg deposition behaviour of females, can account for the male-biased sex ratio of A. canadensis on sticklebacks.

Individual and combined effects of fish predation and bed disturbance on stream benthic communities: a streamside channel experiment

2012 ◽  
Vol 57 (12) ◽  
pp. 2487-2503 ◽  
Author(s):  
PETER B. HERRMANN ◽  
COLIN R. TOWNSEND ◽  
CHRISTOPH D. MATTHAEI
Keyword(s):  
Benthic Communities ◽  
Fish Predation ◽  
Combined Effects

Size Composition of Invertebrate Drift and Fish Predation in a Texas Stream

1988 ◽  
Vol 33 (2) ◽  
pp. 177 ◽  
Author(s):  
David E. Bowles ◽  
Robert A. Short
Keyword(s):  
Size Composition ◽  
Fish Predation ◽  
Invertebrate Drift
Sign in / Sign up

Export Citation Format

Share Document