Results 41 to 50 of about 84,465 (303)

Performance of a glider‐mounted multifrequency echosounder for measuring the vertical distribution and abundance of large pelagic copepods

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract The difficulty of sampling zooplankton communities in situ has driven advancements in autonomous, remote sensing technology. The goal of this paper was to perform a gear comparison study testing the performance of one such piece of technology—a glider‐mounted four‐frequency echosounder—against traditional shipboard methods of measuring ...
Delphine Mossman   +3 more
wiley   +1 more source

Lake Maggiore: geomorphological genesis, lake-level evolution, and present and future ecosystems importance

open access: yesJournal of Limnology, 2023
Lake Maggiore, the second deeper and larger south alpine lake, was selected as a model system to detect the potential damages on water resources, biodiversity and ecosystem health caused by different water levels during the lake-level regulation period (
Cristian Scapozza, Nicola Patocchi
doaj   +1 more source

Sampling effort to characterize estuarine macroinfaunal communities in patchy habitats

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Estuarine benthic macroinfauna have aggregated, patchy distributions, making accurate community measurements dependent upon sampling scales. The purpose of this study is to determine the appropriate core sizes and sampling effort needed to characterize benthic infaunal communities in Corpus Christi Bay, Texas, USA.
Paul A. Montagna
wiley   +1 more source

Red, green, blue color indices as proxy for Symbiodiniaceae cell density and chlorophyll content during coral bleaching

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Coral bleaching, the breakdown of the symbiosis between the coral host and endosymbiotic microalgae, is the main cause of widespread coral reef degradation. Current visual assessment methods for coral health, including color reference cards, are constrained by subjective human color perception and limited resolution.
Erik Francesco Ferrara   +12 more
wiley   +1 more source

Applicability of the steady‐state oxygen stable isotope method for estimating metabolism in low‐productivity Arctic lakes

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Metabolism is a key property of lake ecosystem functioning, but logistical challenges make it difficult to estimate across remote regions. The steady‐state dissolved oxygen (DO) stable isotope method (18O method) estimates metabolism from discrete water samples and thus enables large‐scale surveys.
Fredrik Alriksson   +6 more
wiley   +1 more source

Distribuição vertical da comunidade fitoplanctônica do lago dos Tigres (Goiás, Brasil) - DOI: 10.4025/actascibiolsci.v30i1.1446

open access: yesActa Scientiarum: Biological Sciences, 2008
O lago dos Tigres é um lago do tipo vale bloqueado, sendo que não foi registrado estudo evidenciando a distribuição vertical fitoplanctônica para esse tipo de lago; dessa forma, esta pesquisa assume um caráter pioneiro.
João Carlos Nabout   +1 more
doaj   +1 more source

The Applicability of the Distribution Coefficient, KD, Based on Non-Aggregated Particulate Samples from Lakes with Low Suspended Solids Concentrations [PDF]

open access: yes, 2015
Separate phases of metal partitioning behaviour in freshwater lakes that receive varying degrees of atmospheric contamination and have low concentrations of suspended solids were investigated to determine the applicability of the distribution coefficient,
Douglas, Richard William   +2 more
core   +2 more sources

Individual movement modeling expands the power of migratory species observations: North Atlantic right whale case study

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Understanding a population's distribution depends on observing the presence and movement of individuals throughout their range. For highly mobile marine species, these observations typically rely on high effort monitoring programs. Tracking enough individuals to understand trends in movement behavior is not always logistically feasible, and ...
Abigail M. Kreuser   +3 more
wiley   +1 more source

RELEVANT HYDROLOGY ELEMENTS IN TERMS OF REGIONAL GEOGRAPHY ANALYSIS. CASE STUDY: THE LAND OF HAŢEG [PDF]

open access: yesStudia Universitatis Babeş-Bolyai: Geographia, 2014
Relevant Hydrology Elements in Terms of Regional Geography Analysis. Case Study: the Land of Haţeg. By the diversity of the territorial system components that need to be analyzed, a regional geography study requires a continuous approach of the specific ...
G. HOGNOGI, ROXANA VĂIDEAN
doaj  

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