نتایج جستجو برای: benthic invertebrate

تعداد نتایج: 31185  

Journal: :Comptes Rendus Palevol 2021

Invertebrate taphonomy can provide significant information about the post-mortem processes that affected fossil record. In East Pisco Basin of southern Peru, a Panopea Ménard de la Groye, 1807 shell bed was found in upper Miocene strata Formation, hinting at peculiar biostratinomic and diagenetic history. This contains abundant invertebrate molds cemented by dolomite. The specimens deep infauna...

2010
Kathryn L. Sobocinski Jeffery R. Cordell Charles A. Simenstad K. L. Sobocinski

In coastal environments, the supratidal zone bridges marine and terrestrial ecosystems and is important for energy exchange. However, it is also subject to extensive anthropogenic disturbance, such as armoring of shorelines. Shoreline armoring is extensive along many coasts, but the impacts on biota are comparatively unknown. Between 2000 and 2002, paired and synoptic sampling regimes were empl...

2013
Ana M Queirós Silvana N R Birchenough Julie Bremner Jasmin A Godbold Ruth E Parker Alicia Romero-Ramirez Henning Reiss Martin Solan Paul J Somerfield Carl Van Colen Gert Van Hoey Stephen Widdicombe

Bioturbation, the biogenic modification of sediments through particle reworking and burrow ventilation, is a key mediator of many important geochemical processes in marine systems. In situ quantification of bioturbation can be achieved in a myriad of ways, requiring expert knowledge, technology, and resources not always available, and not feasible in some settings. Where dedicated research prog...

Journal: :Environmental monitoring and assessment 2012
David J Gillett Daniel J Pondella Jan Freiwald Kenneth C Schiff Jennifer E Caselle Craig Shuman Stephen B Weisberg

Volunteer-based citizen monitoring has increasingly become part of the natural resources monitoring framework, but it is often unclear whether the data quality from these programs is sufficient for integration with traditional efforts conducted by professional scientists. At present, the biological and physical characteristics of California's rocky reef kelp forests are concurrently monitored b...

2011
Suzanne N. Arnold Robert S. Steneck

Free space is necessary for larval recruitment in all marine benthic communities. Settling corals, with limited energy to invest in competitive interactions, are particularly vulnerable during settlement into well-developed coral reef communities. This situation may be exacerbated for corals settling into coral-depauperate reefs where succession in nursery microhabitats moves rapidly toward het...

Journal: :Ecology 2012
Christopher Doropoulos Selina Ward Alyssa Marshell Guillermo Diaz-Pulido Peter J Mumby

Newly settled recruits typically suffer high mortality from disturbances, but rapid growth reduces their mortality once size-escape thresholds are attained. Ocean acidification (OA) reduces the growth of recruiting benthic invertebrates, yet no direct effects on survivorship have been demonstrated. We tested whether the reduced growth of coral recruits caused by OA would increase their mortalit...

Journal: :desert 2013
k. rezaei tavabe h. azarnivand

qanat is one of the important inland aquatic ecosystems commonly containing freshwater in arid and semi-aridregions. there are 37 qanat chains in kerman county in the kerman province of iran. during past years, some ofthem have been dried as a result of deep wells digging in their vicinities. the present study used morphomeristicanalysis to characterize fishes and invertebrate fauna in the qana...

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