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benthicplants, etc ; Landsat; chlorophyll; coastal water; cost effectiveness; eutrophication; evolution; hypersalinity; mortality; mouth; turbidity; water quality; Mediterranean Sea; Show all 13 Subjects
Abstract:
... During recent years, several eutrophication processes and subsequent environmental crises have occurred in Mar Menor, the largest hypersaline coastal lagoon in the Western Mediterranean Sea. In this study, the Landsat-8 and Sentinel-2 satellites are jointly used to examine the evolution of the main water quality descriptors during the latest ecological crisis in 2021, resulting in an important los ...
benthicplants, etc ; biomass; landscapes; macroalgae; reflectance; satellites; spatial data; submerged aquatic plants; variance; Baltic Sea; Show all 10 Subjects
Abstract:
... This work assessed the capability of Compact Airborne Spectrographic Imager (CASI) and satellite multispectral Sentinel-2 image data for mapping the distribution, percent cover (%cover) and biomass of submerged aquatic vegetation (SAV) in optically complex coastal waters of the Baltic Sea. As a first step, the distribution maps of SAV were created for brown macroalgae, green macroalgae and higher ...
... The longitudinal dispersion coefficient is an important index for contaminant transports in rivers. Investigating it by using an analytical approach is conducive to obtain its expression with physical meanings and wide application ranges. However, the analytical solutions are extremely complex for subsequent derivations when many influencing factors, such as benthic vegetation and surface wind, ar ...
benthicplants, etc ; Bacillariophyceae; administrative management; eutrophication; fish; lakes; land use; microfossils; sediments; soil erosion; water quality; watersheds; Massachusetts; Show all 13 Subjects
Abstract:
... Stager JC, Harvey L, Chimileski S. 2020. Long-term cultural eutrophication in White and Walden Ponds (Concord, Massachusetts, USA), Thoreau’s lakes of light. Lake Reserv Manage. XX:XXX–XXX. Two historically important ponds in the vicinity of Boston, MA, were subjected to a comparative paleolimnological investigation of the timing and causes of eutrophication trends in each. The remarkable clarity ...
... Benthic vegetation is arguably one of the most important indicators of the state of marine environment. Assessment of the status of eelgrass (Zostera marina) is commonly done using various remote sensing methods such as aerial photography or satellite images. These methods often fail to capture the true scenario beneath the surface of the water if the water is turbid or the satellite image is mask ...
benthicplants, etc ; air; chlorophyll; data collection; meteorological data; photosynthesis; photosynthetically active radiation; primary productivity; reflectance; submerged aquatic plants; vegetation; water temperature; Baltic Sea; Show all 13 Subjects
Abstract:
... This study investigated the potential to predict primary production in benthic ecosystems using meteorological variables and spectral indices. In situ production experiments were carried out during the vegetation season of 2020, wherein the primary production and spectral reflectance of different communities of submerged aquatic vegetation (SAV) were measured and chlorophyll (Chl a+b) concentratio ...
benthicplants, etc ; Cladophora; Dasya; Dictyota dichotoma; Ectocarpus; Eudesme; Phyllophora; Rhodochorton; biomass; coasts; dominant species; epiphytes; eutrophication; flora; landscapes; macrophytes; species diversity; Black Sea; Show all 18 Subjects
Abstract:
... —For the first time, the landscape approach was used to conduct a comparative analysis of the macrophytobenthic species diversity and changes in its biomass in the coastal zone of Karanskii Nature and Landscape Reserve over the period of 1964–2016. A landscape map of the submarine nearshore slope was produced, and three benthic natural complexes (BNCs) have been distinguished. The main such comple ...
benthicplants, etc ; Chara; habitats; herbaria; lakes; morphometry; oospores; surface water; Lithuania; Northern European region; Show all 10 Subjects
Abstract:
... Distribution and ecological requirements of Chara filiformis A. Braun in Hertzsch in Lithuanian water bodies were studied. This species has quite limited distribution in central and northern Europe, clearly preferring the habitat ‘3140 Hard oligo-mesotrophic waters with benthic vegetation of Chara spp.’. Morphological features of oospores and gyrogonites of C. filiformis were studied based on 50 g ...
... Benthic vegetation at the land-water interface is recognized as a filter for silica fluxes, which represents an important but under-investigated subject. This paper aims to analyze stocks and fluxes of biogenic (BSi) and dissolved (DSi) silica in relation to nitrogen (N) and phosphorus (P) in the littoral zone of a deep lake. Specifically, we evaluated how different primary producers can influence ...
benthicplants, etc ; DNA barcoding; biodiversity; climate change; coasts; cryptic species; environmental degradation; environmental factors; flora; macroalgae; sea transportation; urbanization; Mediterranean Sea; Show all 13 Subjects
Abstract:
... Seaweed communities are important coastal ecosystems representing good indicators of environmental variation related to climate change and other long-term changes. Long-term variation in the distribution of seaweed communities and individual seaweed species has been intensively investigated; however, long-term studies considering the whole seaweed flora of a geographical area have been infrequentl ...
... Macrophytes influence aquatic ecosystems by increasing habitat complexity and providing trophic resources for aquatic fauna. While herbivory on freshwater macrophytes is widely documented in lakes and low‐velocity riverine habitats, the influence of herbivory on macrophytes in higher‐velocity habitats has rarely been examined. We investigated the hypothesis that water velocity can influence consum ...
benthicplants, etc ; Cystoseira; anthropogenic stressors; biodiversity; macroalgae; macrophytes; urbanization; Adriatic Sea; Show all 8 Subjects
Abstract:
... Canopy-forming algal species, like those of the genus Cystoseira, are known to play an important role as ecosystems-engineers. Under key anthropogenic stressors (e.g. nutrient enrichment and urbanization), these species are replaced by persistent and smaller taxa, defined as turf-forming algae. The scope of this work was to search for shifts from canopy-forming to turf-forming taxa, changes in mac ...
benthicplants, etc ; Zostera marina; autotrophs; biomass; carbohydrates; cohesion; hydrodynamics; meadows; seagrasses; sediment transport; sediments; shear stress; summer; suspended sediment; water power; winter; Virginia; Show all 17 Subjects
Abstract:
... The suspension and transport of sediments in coastal environments influences water column clarity, and also affects the growth of photosynthetic organisms. The presence of benthic vegetation, such as seagrass, can attenuate wave and tidal energy, thereby altering suspended sediment concentrations (SSC) and microphytobenthos (MPB) biomass that secrete biogenic compounds that can increase sediment c ...
benthicplants, etc ; absorption; aerial photography; algorithms; oceans; reflectance; remote sensing; rivers; surveys; vegetation; Florida; Show all 11 Subjects
Abstract:
... Benthic mapping employs field surveys, hydroacoustic measurements, aerial photography, and satellite imagery. Effective benthic mapping involves removing overlying water effects from atmospherically corrected remotely sensed data to enhance signals from the seafloor. Our previous water correction algorithms depend on controlled laboratory measurements of substrates in clear water, which had challe ...
benthicplants, etc ; chlorophyll; coastal zone management; dissolved organic matter; dredging; estuaries; light intensity; littoral zone; monitoring; particulates; photosynthesis; photosynthetically active radiation; regression analysis; seagrasses; storms; suspended sediment; turbidity; variance; New Zealand; Show all 19 Subjects
Abstract:
... Benthic plants such as seagrasses rely on light availability, which is controlled by light attenuation in the water column. Elevated suspended sediment within estuaries strongly influences light attenuation and is governed by the recent history of natural events and human activities. To determine the constituents controlling light penetration (quantified by the irradiance attenuation coefficient, ...
benthicplants, etc ; conservation buffers; ecosystems; issues and policy; landscape management; landscapes; macroinvertebrates; urbanization; wetlands; Show all 9 Subjects
Abstract:
... Effective landscape management decisions require knowledge of the relative effects of landscape variables on ecological responses, so that the most important landscape variables can be targeted for management. The relative effects of wetland cover and urbanization on remaining wetland quality are poorly understood because of correlations between these landscape variables. We determined the relativ ...
... Coastal areas provide a high variety of sedimentary habitats that influence the structure of resident fauna even on small geographical scales. Therefore, examinations of spatial variations in benthic assemblages require background knowledge of the environmental and biotic heterogeneity of habitats in order to understand ecological processes in such areas. The effect of habitat-related abiotic and ...
... Phytoplankton and benthic vegetation biomass undergoes spatial-temporal changes in relation to their life cycle, but also to meteorological conditions, physical-chemical variables, organic input and internal dynamism. The main aim of this work was to observe the effect of all environmental variables on the vegetative dynamic process in a protected zone of a Mediterranean costal lagoon (Lesina lago ...
... Understanding the effects of basal resources on the functioning of coastal ecosystems is of great interest in ecology since the different composition and availability of food sources directly affect trophic pathways and energy flow in systems. In this study, we determined which basal resources fuel the food webs of four benthic communities from different habitats in the shallow, low diversity Puck ...
benthicplants, etc ; Bacillariophyceae; Cochlodinium; Noctiluca; Trichodesmium; algal blooms; algorithms; chlorophyll; color; environmental factors; fluorescence; marine environment; planning; qualitative analysis; Oman; Persian Gulf; Show all 16 Subjects
Abstract:
... In this study, MERIS fluorescence data were utilized to monitor a toxin-producing dinoflagellate Cochlodinium bloom in 2008 in the Arabian Gulf and the Sea of Oman. The bloom was characterized using modified fluorescence line height (MFLH), enhanced Red–Green–Blue (ERGB) and true color composites, and the ratio of particulate backscattering (bbp) to MFLH (bbp/MFLH). In addition to high MFLH values ...