Role of fungal patchiness on vegetal detritus in the trophic interactions between two brackish detritivores, Idotea baltica and Gammarus insensibilis

Hydrobiologia ◽  
1995 ◽  
Vol 316 (2) ◽  
pp. 117-126 ◽  
Author(s):  
M. Letizia Constantini ◽  
Loreto Rossi
Keyword(s):  
Trophic Interactions ◽  
Idotea Baltica

scholarly journals Contrasting effects of urbanization on arboreal and ground-dwelling land snails: role of trophic interactions and habitat fragmentation

2020 ◽  
Vol 23 (3) ◽  
pp. 603-614
Author(s):  
Ikuyo Saeki ◽  
Shigeru Niwa ◽  
Noriyuki Osada ◽  
Wakana Azuma ◽  
Tsutom Hiura
Keyword(s):  
Habitat Fragmentation ◽  
Trophic Interactions ◽  
Land Snails

scholarly journals Feeding preferences of amphipod crustaceans Ampithoe ramondi and Gammarella fucicola for Posidonia oceanica seeds and leaves

2019 ◽  
Vol 83 (4) ◽  
pp. 349
Author(s):  
Inés Castejón-Silvo ◽  
Damià Jaume ◽  
Jorge Terrados
Keyword(s):  
Direct Evidence ◽  
Paracentrotus Lividus ◽  
Posidonia Oceanica ◽  
Feeding Preferences ◽  
Research Attention ◽  
Seagrass Meadows ◽  
Idotea Baltica ◽  
Published Evidence ◽  
Sarpa Salpa

The functional importance of herbivory in seagrass beds is highly variable among systems. In Mediterranean seagrass meadows, macroherbivores, such as the fish Sarpa salpa and the sea urchin Paracentrotus lividus, have received most research attention, so published evidence highlights their importance in seagrass consumption. The role of small crustaceans in seagrass consumption remains less studied in the region. Herbivory on Posidonia oceanica seeds has not previously been reported. In turn, crustacean herbivory on P. oceanica leaves is broadly recognized, although the species feeding on the seagrass are mostly unknown (except for Idotea baltica). This work evaluates P. oceanica consumption by two species of amphipod crustaceans commonly found in seagrass meadows. Ampithoe ramondi and Gammarella fucicola actively feed on P. oceanica leaves and seeds. Both species preferred seeds to leaves only when the seed coat was damaged. This study provides the first direct evidence of consumption of P. oceanica seeds by the two named amphipod crustaceans, and confirms that they also consume leaves of this seagrass species.

Erratum to “Modelling phytoplankton succession on the Bering Sea shelf: role of climate influences and trophic interactions in generating Emiliania huxleyi blooms 1997–2000”

2005 ◽  
Vol 52 (5) ◽  
pp. 881-882
Author(s):  
Agostino Merico ◽  
Toby Tyrrell ◽  
Evelyn J. Lessard ◽  
Temel Oguz ◽  
Phyllis J. Stabeno ◽  
...  
Keyword(s):  
Trophic Interactions ◽  
Bering Sea ◽  
Emiliania Huxleyi ◽  
Phytoplankton Succession ◽  
Climate Influences ◽  
Bering Sea Shelf ◽  
The Bering Sea

Pesticide side-effects on predatory mites: the role of trophic interactions

2010 ◽  
pp. 465-469 ◽  
Author(s):  
Alberto Pozzebon ◽  
Carlo Duso
Keyword(s):  
Side Effects ◽  
Trophic Interactions ◽  
Predatory Mites

Role of nematodes in the food web: nematodes as predator and prey.

2021 ◽  
pp. 216-246
Author(s):  
Christoph Ptatscheck
Keyword(s):  
Food Web ◽  
Functional Response ◽  
Trophic Interactions ◽  
Individual Species ◽  
Energy Fluxes ◽  
Direct Observations ◽  
Microcosm Studies

Abstract This chapter provides information on the role of nematodes in the food web, including their participation in matter and energy fluxes within ecosystems. It highlights that nematodes are both predators and prey for organisms ranging from protozoans to vertebrates, based on gut analyses and direct observations. Functional response experiments, microcosm studies, and enclosures/exclosures in the field can be used to investigate the intensity of these trophic interactions and their impact on individual species as well as entire communities.

The role of fish in cyanobacterial blooms in Australia

1994 ◽  
Vol 45 (5) ◽  
pp. 905 ◽  
Author(s):  
PC Gehrke ◽  
JH Harris
Keyword(s):  
Freshwater Fish ◽  
Trophic Interactions ◽  
Cyanobacterial Blooms ◽  
Native Fish ◽  
Fish Stocks ◽  
Natural Predator ◽  
Fish Grazing ◽  
Zooplankton Communities ◽  
Alternative Solutions

Potential pathways for interaction between fish and cyanobacteria include fish grazing directly on cyanobacteria, fish preying on grazers of cyanobacteria, fish supplying nutrients through excretion, fish providing nutrients by resuspending sediments, and fish altering the availability of nutrients and light by damaging macrophytes. The dominant interactions in Australia are likely to be through pathways that increase the availability of nutrients at the bottom of the food web. Carp probably contribute to these pathways more than do other species by excreting nutrients, resuspending sediments and damaging macrophytes. Further research, on both alien and native fish species, is needed to quantify these processes. Grazing of cyanobacteria by fish is probably trivial because freshwater fish in Australia lack mechanisms to process cyanobacterial cells effectively. Trophic interactions between planktivorous fish, zooplankton and cyanobacteria require closer study to assess the potential for preventing cyanobacterial blooms by manipulating natural predator communities in Australia. However, the need to protect and strengthen native fish stocks precludes removal of native fish to reduce predation pressure on zooplankton communities. Alternative solutions that combine control of nutrients entering waterways and removal of carp have a higher likelihood of success.

scholarly journals The role of microzooplankton trophic interactions in modelling a suite of mesocosm ecosystems

2018 ◽  
Vol 368 ◽  
pp. 169-179 ◽  
Author(s):  
Bei Su ◽  
Markus Pahlow ◽  
A. E. Friederike Prowe
Keyword(s):  
Trophic Interactions

Modeling cyanobacterial blooms in tropical reservoirs: The role of physicochemical variables and trophic interactions

2020 ◽  
Vol 744 ◽  
pp. 140659 ◽  
Author(s):  
Cihelio Alves Amorim ◽  
Ênio Wocyli Dantas ◽  
Ariadne do Nascimento Moura
Keyword(s):  
Trophic Interactions ◽  
Cyanobacterial Blooms ◽  
Tropical Reservoirs ◽  
Physicochemical Variables
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