Metacommunity ecology recognizes the interplay between local and regional patterns in contributing to spatial variation in community structure. In aquatic systems, the relative importance of such patterns depends mainly on the potential connectivity of the specific system. Thus, connectivity is expected to increase in relation to the degree of water movement, and to depend on the specific trait...

Understanding spatial and temporal patterns of bioirrigation induced by benthic fauna ventilation is critical given its significance on benthic nutrient exchange and biogeochemistry in coastal ecosystems. The quantification of this process challenges marine scientists because faunal activities and behaviors are concealed in an opaque sediment matrix. Here, we use a hybrid medical imaging techni...

This paper presents a simple model to determine the benthic fluxes of matter across the sediment-water Interface when a benth~c hamber is used. The model is based on accepting that the limiting step for the overall rate of transfer while the chamber is in position is the diffusion through the diffusive boundary layer (DBL) overlying the sediment, and it assumes that this rate is necessarily aff...

Ammonites are among the best-known fossils of the Phanerozoic, yet their habitat is poorly understood. Three common ammonite families (Baculitidae, Scaphitidae, and Sphenodiscidae) co-occur with well-preserved planktonic and benthic organisms at the type locality of the upper Maastrichtian Owl Creek Formation, offering an excellent opportunity to constrain their depth habitats through isotopic ...

Benthic–pelagic coupling studies have shown that the response of benthic system to eutrophication is subject complex nonlinear dynamics with specific thresholds beyond which abrupt changes in ecosystem occur and time lags between inputs responses. The “HYPOXIA: regime shifts ” project aimed investigate how nutrient input water column results ecological processes eutrophication, may lead signifi...

During the last decade, considerable efforts have been undertaken to achieve a “good ecological status” of European coastal waters and ensuring development methodological standards for evaluation this status. However, current routine biomonitoring implicates time-consuming costly manual sorting morphological identification benthic macrofauna. In our study, we tested performance environmental DN...

Five lotic systems of Serra do Cipó, south-east Brazil, were investigated in order to assess the existing diversity of benthic macroinvertebrates, habitats-microhabitats, and the available trophic resources. For each river it was analysed the communities of benthic macroinvertebrates and the composition of some taxonomic groups (Plecoptera, Ephemeroptera, Trichoptera and Diptera Chironomidae): ...

this study was conducted to assess water quality level of zarin gol stream on macrobenthic invertebrates. macrobenthic fauna were sampled from 9 selected sampling stations along the stream with an average distance of 22 km by using a surber sampler every 45 days during the year. sampling was replicated 9 times in each sampling station. collected samples were fixed with 4% formalin, isolated, an...

We investigated the food web structure of the Salses-Leucate Lagoon (northwestern Mediterranean) through δ13C and δ15N analysis of its benthic macrofauna and potential food sources. This lagoon was heavily human-modified during the 1970s, allowing permanent exchange with the open sea and an increase in salinity from that time. As a result, it exhibits a much less marked salinity gradient than t...

Non-destructive methodologies based on the use of artificial substrates (AS) for quantitative sampling macrofauna have been used to solve problems in complex benthic environment, such as rocky reefs. The assemblages two different types AS (dendritic and crevice), at locations were studied. main goal was evaluate complementarity dendritic crevice when associated with environments, scenarios: wit...