Impact of mangrove deforestation on nutrients, phytoplankton community structure and biomass MARG-1 final report submitted to : the Western Indian Ocean Marine Science Association (WIOMSA) by Margareth Kyewalyanga

Cover of: Impact of mangrove deforestation on nutrients, phytoplankton community structure and biomass | Margareth Kyewalyanga

Published by WIOMSA in [Zanzibar] .

Written in English

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Statementby Margareth S. Kyewalyanga.
ContributionsWestern Indian Ocean Marine Science Association.
The Physical Object
Pagination21 leaves :
Number of Pages21
ID Numbers
Open LibraryOL17987479M
LC Control Number2006305918

Download Impact of mangrove deforestation on nutrients, phytoplankton community structure and biomass

Impact of fish cage-culture on the community structure of zooplankton by alkaline Lugol, formalin and sodium thiosulfate (S HERR & SHERR, ). Ciliates samples were kept in the cooler until laboratorial procedure.

Phytoplankton samples were preserved in 1% Lugol’s solution. Depth (m), temperature (°C), dissolved oxygen. The phytoplankton biomass (chl a) is a common indicator of eutrophication because it provides consistent insights of a certain area, but it should be monitored with the compositional changes of the community structure (McQuatters-Gollop et al.,Ninčević Gladan et al., ).Cited by:   Effects of plant harvesting and nutrient enrichment on phytoplankton community structure in a shallow urban lake Influence of Myriophyllum spicatum L.

on the species composition, biomass and primary productivity of Jensen J. P., Jeppesen E., Olrik K. and Kristensen P (). Impact of nutrients and physical factors on the shift from Cited by: Samples of nutrients, phytoplankton biomass and community composition, and primary production were collected along an eight stations downstream transect (4 in upper reaches, Stns W1 to W4, and 4 in lower reaches, Stns W5 to W8) in the subtropical Modaomen Chan-nel, PRE (with irregular semi-diurnal tide) during NT (September 18–20) and ST File Size: 4MB.

Plankton form the base of the marine food web and respond rapidly to environmental changes. Local and large-scale changes in phytoplankton biomass and zooplankton abundance (beyond natural variation) were observed over the period –, providing a possible early warning of a wider change in the marine environment.

The size-fractionated biomass and primary production of phytoplankton, and the influence of environmental factors on it were studied in the Dongsha natural gas hydrate zone of the northern South China Sea in May Low nutrient, low chlorophyll a (Chl a) and primary productivity characteristics were found in these waters.

The phenomena of subsurface Chl a Author: Jianhua Kang, Qianyong Liang, Jianjun Wang, Yili Lin, Xuebao He, Zhen Xia, Xinqing Zheng, Yu Wang. Phytoplankton biomass (chl-a) Water samples ( mL) for total phytoplankton biomass (chl-a) were passed through μm Whatman GF/F filters under low-vacuum pressure (20 μm 5–20 μm, Cited by: 8.

Temperature-dependent changes in biomass and community composition depended on the initial composition of phytoplankton communities. Abiotic conditions had a major effect on biomass of phytoplankton communities exposed to different temperature conditions, however, the effect of biotic and abiotic conditions together was even more by: The macroecological patterns emerging from the analysis suggests plausible causal relationships between nutrient availability and global phytoplankton community responses: When DIN and P are below ca.

5 μM and μM, respectively, increases in the concentration of either nutrient correlate with increases in both biomass and the contribution Cited by: 7. A multispecies bloom caused by the centric diatoms, viz. Coscinodiscus radiatus, Chaetoceros lorenzianus and the pennate diatom Thalassiothrix frauenfeldii was investigated in the context of its impact on phytoplankton and microzooplankton (the loricate ciliate tintinnids) in the coastal regions of Sagar Island, the western part of Sundarban mangrove wetland, by: Thus, mangrove is a non-taxonomic term used to describe a diverse group of plants that are all adapted to a wet, saline habitat.

Mangrove may typically refer to an individual species. Terms such as mangrove community, mangrove ecosystem, mangrove forest, mangrove swamp, and mangal are used interchangeably to describe the entire mangrove Size: Impact of mangrove deforestation on nutrients.

The cycling of essential nutrients is central to mangrove productivity. A mass balance shows that mangroves rely on soil ammonification, nitrification, and dissimilatory reduction to ammonium for available nitrogen. Mangroves are often nutrient limited and show tight coupling between nutrient availability and tree photosynthesis.

This relationship and, thus, forest productivity can be Cited by: 5. It is estimated that ocean temperature warming will cause phytoplankton and zooplankton biomass to decrease by 6% and 11% respectively by the end of the century.

A lower amount of these two main. The size scaling of phytoplankton physiology, growth and photosynthetic rate, nutrient quotas, and rates of resource acquisition always have the potential to shape the size structure of the phytoplankton community and are worth considering in conjunction with models employing grazing, coagulation, and by:   Biomass and diversity of phytoplankton are influenced by nutrient and environmental parameters in mangrove estuaries and, concurrently, phytoplankton play a significant role in fish diversity and.

A mangrove is a shrub or small tree that grows in coastal saline or brackish term is also used for tropical coastal vegetation consisting of such species. Mangroves occur worldwide in the tropics and subtropics, mainly between latitudes 25° N and 25° total mangrove forest area of the world in wassquare kilometres (53, sq mi), spanning countries.

The effects of nutrients and zooplankton community structure on phytoplankton growth in a subtropical Australian reservoir: An enclosure study. Influence of water‐column depth and mixing on phytoplankton biomass, community composition, and nutrients Christoph G.

Jäger Department Biologie II, Ludwigs‐Maximilians‐Universität München, Grosshaderner Str. 2, Cited by: the time scale considered to assess phytoplankton primary production. The principal limiting nutrients in aquatic environments are nitrogen, phosphorous and silicon. It is generally seen that if their concentration is low, phytoplankton cannot increase their biomass and thus photosynthesis remains low.

On the other hand, when nutrientFile Size: KB. Mangrove forests are one of the world's most threatened tropical ecosystems with global loss exceeding 35% (ref. Juvenile coral reef fish often inhabit mangroves2,3,4,5, but the importance of. Environmental variables, phytoplankton biomass and species composition in Nanhu Lake in Yingdong Village, Chongming Island were monitored from August to September The relationship between environmental variables and population variation of phytoplankton was discussed.

The results showed that water body morphology was the key factor leading to the Author: Yue Hong Zhang, Fei Peng Li, Hu Hu Zhao, Hai Ping Zhang. Abstract. Phytoplankton are key components of aquatic ecosystems, fixing CO 2 from the atmosphere through photosynthesis and supporting secondary production, yet relatively little is known about how future global warming might alter their biodiversity and associated ecosystem functioning.

Here, we explore how the structure, function, and biodiversity of a planktonic. At the phytoplankton level, we find in most cases a significant effect of CO 2 on primary production, biomass and chlorophyll a in all the size fractions during phases II and III, pointing to a size independent stimulation of nutrients and CO 2 over all the phytoplankton groups, which particularly benefited the increase of diatoms in absolute Cited by: Derived from the Greek words phyto (plant) and plankton (made to wander or drift), phytoplankton are microscopic organisms that live in watery environments, both salty and fresh.

Some phytoplankton are bacteria, some are protists, and most are single-celled plants. Among the common kinds are cyanobacteria, silica-encased diatoms, dinoflagellates, green algae, and Author: Rebecca Lindsey. Phytoplankton production and biomass decreased from to mg C m −2 day −1 and from to mg chl a m −2, respectively, throughout the study period.

Large cells (≥5 µm), which dominated both the phytoplankton production and biomass during the Lagrangian study, were replaced by small phytoplankton (–5 µm) 13 days by: In order to evaluate latitudinal differences in the relationship of phytoplankton biomass and diversity with environmental conditions in shallow lakes, we sampled 98 shallow lakes from three European regions: Denmark (DK), Belgium/The Netherlands (BNL) and southern Spain (SP).

Phytoplankton biomass increased with total phosphorus (TP) concentrations and decreased. 96 L.O. Crossetti & C.E.M. Bicudo: Effects of nutrient impoverishment on phytoplankton biomass experiments are employed to understand nutrient dynamics and their effects on biological communities, as well as to test such techniques for impacted systems.

Variation in the phytoplankton abundance, and abiotic variables could exert in shaping the community structure of phytoplankton was In this study phytoplankton abundance, biomass and diversity will be compared in first order streams with different water sources, i.e.

a lake, a wetland and a groundwater well. File Size: KB. INTRODUCTION. Several studies have discussed the effects of environmental factors on phytoplankton dynamics (Boney, ; De Huszar and Caraco, ; Kagalou et al., ; Hassan et al., ; Susanne et al., ).

The influence of various factors on the seasonal appearance of phytoplankton differs significantly, with physical factors (such as temperature. Trophic interactions and direct physical effects control phytoplankton biomass and production in an estuary Andrea E.

Alpine and James E. Cloern U.S. Geological Survey MS, Middlefield Rd., Menlo Park, California Abstract. Impact of two decades of shellfish farming on phytoplankton biomass, abundance and productivity of a coastal lagoon influenced by upwelling Impacto de dos décadas de ostricultura en la biomasa, abundancia y productividad fitoplanctónica de una laguna costera influenciada por surgencias Martín A.

Montes-Hugo1, Saúl Alvarez-Borrego2. Primary Productivity and Biomass Determination in a Phytoplankton Community 1. (c) Mr. Jeoffrey Sanga - Delos Reyes, UPLB 1EXERCISE 5B: PRIMARY PRODUCTIVITYAND BIOMASS DETERMINATION IN APHYTOPLANKTON COMMUNITY Acos, Roy Luister Autor, Jovel Marie Caballes, Denisse Abbie Cadiente, Lordan Delos Reyes, Jeoffrey Sanga Lagajino.

Anthropogenic& NutrientLoads& N,P Altered& phytoplankton& communies Fisheries Habitat AestheGcs& Recreaon& Harmful&algal& blooms and&toxins& Low&& Producon&. Light limitation of phytoplankton biomass and macronutrient utililization in the Southern Ocean.

Limnology and Oceanogra Mitchell, B.G. and O. Holm-Hansen, Observations and modeling of the Antarctic phytoplankton crop in relation to mixing depth.

Deep-Sea Resea Morel, A., community structure of fish on neighbouring coral reefs. In addition, the biomass of several commercially important species is more than doubled when adult habitat is connected to man-groves.

The largest herbivorous fish in the Atlantic, Scarus guacamaia, has a functional dependency on mangroves and has suffered local extinction after File Size: KB. Biosequestration is the capture and storage of the atmospheric greenhouse gas carbon dioxide by continual or enhanced biological processes.

This form of carbon sequestration occurs through increased rates of photosynthesis via land-use practices such as reforestation, sustainable forest management, and genetic engineering. Methods and practices exist to enhance soil carbon. Seasonal variability of phytoplankton biomass and composition in the major water masses of the Indian Ocean sector of the Southern Ocean Takahiro Iida a,b,*, Tsuneo Odate a,b a National Institute of Polar Research, Midori-cho, Tachikawa, TokyoJapan b Department of Polar Science, School of Multidisciplinary Sciences, Graduate University for Advanced.

Patterns in phytoplankton size structure: abundance, biomass and production in coastal and open-ocean waters Emilio Marañón Universidad de Vigo Vigo (Spain) Thanks to: Pedro Cermeño, María Huete-Ortega, Daffne C. López-Sandoval, Tamara Rodríguez-Ramos, Cristina Sobrino, José M. Blanco, Jaime Rodríguez Primary production in the ocean.

pact of sewage discharges to the mangrove wetland. Tam and Wong () tested the mangrove soils for the retention of nutrients from wastewater. While different soils retained nutrients at different rates, the wastewater borne nitrogen and phosphorus were mostly concen- trated in the upper 1 cm of the soil, with very little downward percola.

The relationship between total phytoplankton biomass and phosphorus concentrations was sigmoid. Trajectories of phytoplankton biomass and community dynamics suggest that eutrophication effects can successfully be reversed when management efforts decrease nutrient loading to a level sufficiently low to overcome community resilience.

To evaluate how mangrove invasion and removal can modify short-term benthic carbon cycling and ecosystem functioning, we used stable-isotopically labeled algae as a deliberate tracer to quantify benthic respiration and C-flow over 48 h through macrofauna and bacteria in sediments collected from (1) an invasive mangrove forest, (2) deforested mangrove sites 2 and 6 years Cited by: preprint – 1 of 7 To appear in Proceedings, 3rd International Hydrology and Water Resources Symposium (Hydro ), Vol 1, pp.The Effects of Freshwater Flows and Salinity on Phytoplankton Biomass and Composition in an Urban.Phytoplankton ecology of Lake Kivu (eastern Africa): biomass, production and elemental ratios Hugo Sarmento, Mwapu Isumbisho, Stéphane Stenuite, François Darchambeau, Bruno Leporcq and Jean-Pierre Descy Introduction Lake Kivu, located between Rwanda and the Kivu Province (Democratic Republic of Congo), is the smallest of the East.

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