Metaphyton mat conditions and their effects on filamentous algal communities and their diatom epiphytes

2021 ◽  
Author(s):  
Lynnette Lavery Saunders
Keyword(s):  
Algal Communities

STRUKTUR KOMUNITAS MAKRO ALGA DI PESISIR PULAU KECAMATAN BULANG

SIMBIOSA ◽  
2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Notowinarto Notowinarto ◽  
Ramses Ramses ◽  
Mulhairi Mulhairi
Keyword(s):  
Community Structure ◽  
Diversity Index ◽  
Algal Species ◽  
Algal Communities ◽  
Marine Life ◽  
Ph Values ◽  
Abundance Patterns ◽  
Coastal Marine ◽  
Temperature Parameter ◽  
Important Value Index

Bulang districts Batam Islands of  Riau province (Riau Islands), its consists of many islands with as well as having the potential diversity of coastal marine life in particular kinds of macro algae or seaweed. Conducted research aimed to determine the structure of macro- algal communities in the intertidal zone islands. The results of the identification of algal species found 16 species are: the Order of Chlorophyceae as 6 spesies; Order Phaeophyceae as 2 spesies; and Order Rhodophyceae as 8 spesies. The community structure at the five stations showed the highest values were found in the island of dominance Cicir (D ' = 0.79) , uniformity index values on Tengah Island (E ' = 0.99) , while the island Balak had the highest diversity index (H ' = 0.88) , with the abundance patterns of population structure on the island is pretty good Central . Results of correlation analysis of regression between IVI types of algae with the conditions of environmental quality suggests that there is a significance (Fhit ˃ F table and the value of r = > 90 %) between IVI algae Halimeda sp and Cryptarachne polyglandulosa at each station with a temperature parameter surface (⁰C) , depth temperature (⁰C) and pH values. Keywords : Algae, Community Structure, Important Value Index.

Assessment of the Reactions of Algal Communities to Influence of Climatic Factors in the North-Western Black Sea Ecosystem

2018 ◽  
Vol 20 (2) ◽  
pp. 121-134 ◽  
Author(s):  
G. G. Minicheva ◽  
V. N. Bolshakov ◽  
E. S. Kalashnik ◽  
A. B. Zotov ◽  
A. V. Marinets
Keyword(s):  
Black Sea ◽  
Climatic Factors ◽  
Algal Communities ◽  
The North ◽  
North Western

Composition, biomass, and photosynthetic activity of the benthic algal communities in a littoral zone of Lake Baikal in summer

Limnology ◽  
2002 ◽  
Vol 3 (3) ◽  
pp. 175-180 ◽  
Author(s):  
K. Nozaki ◽  
H. Morino ◽  
H. Munehara ◽  
V. G. Sideleva ◽  
K. Nakai ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Littoral Zone ◽  
Photosynthetic Activity ◽  
Algal Communities

scholarly journals Water quality drives the regional patterns of an algal metacommunity in interconnected lakes

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Min Sung Kim ◽  
Seok Hyun Ahn ◽  
In Jae Jeong ◽  
Tae Kwon Lee
Keyword(s):  
Water Quality ◽  
Community Assembly ◽  
River Flow ◽  
Geographical Area ◽  
Oxygen Demand ◽  
Algal Community ◽  
Regional Patterns ◽  
Algal Communities ◽  
Species Sorting ◽  
Metacommunity Structure

AbstractThe metacommunity approach provides insights into how the biological communities are assembled along the environmental variations. The current study presents the importance of water quality on the metacommunity structure of algal communities in six river-connected lakes using long-term (8 years) monitoring datasets. Elements of metacommunity structure were analyzed to evaluate whether water quality structured the metacommunity across biogeographic regions in the riverine ecosystem. The algal community in all lakes was found to exhibit Clementsian or quasi-Clementsian structure properties such as significant turnover, grouped and species sorting indicating that the communities responded to the environmental gradient. Reciprocal averaging clearly classified the lakes into three clusters according to the geographical region in river flow (upstream, midstream, and downstream). The dispersal patterns of algal genera, including Aulacoseira, Cyclotella, Stephanodiscus, and Chlamydomonas across the regions also supported the spatial-based classification results. Although conductivity, chemical oxygen demand, and biological oxygen demand were found to be important variables (loading > |0.5|) of the entire algal community assembly, water temperature was a critical factor in water quality associated with community assembly in each geographical area. These results support the notion that the structure of algal communities is strongly associated with water quality, but the relative importance of variables in structuring algal communities differed by geological regions.

Nutrient enrichment overwhelms top-down control in algal communities around cormorant colonies

2016 ◽  
Vol 476 ◽  
pp. 31-40 ◽  
Author(s):  
Karine Gagnon ◽  
Joakim Sjöroos ◽  
Juho Yli-Rosti ◽  
Marjo Stark ◽  
Eva Rothäusler ◽  
...  
Keyword(s):  
Nutrient Enrichment ◽  
Top Down ◽  
Algal Communities

scholarly journals Succession of algal communities in headwaters: a comparison of pine afforested and natural grassland streams

2017 ◽  
Vol 32 (3) ◽  
pp. 423-434 ◽  
Author(s):  
Luciana Cibils-Martina ◽  
Romina E. Principe ◽  
Javier A. Márquez ◽  
E. Noemí Gari ◽  
Ricardo J. Albariño
Keyword(s):  
Algal Communities ◽  
Natural Grassland

Post-Pollution: Characterizing Ecological Recovery in a Historically Nutrient Enriched Lake.

2018 ◽  
Author(s):  
Iain MacKenzie
Keyword(s):  
Washington State ◽  
Septic System ◽  
Algal Communities ◽  
System A ◽  
Chemical Measurements ◽  
Healthy State ◽  
Lake Bottom ◽  
Lake Washington ◽  
Lake Bottom Sediment ◽  
Reconstructive Techniques

An iconic story of recovery from nutrient pollution is the restoration of the heavily enriched Lake Washington in Seattle, Washington State. Originally an integral part of the municipal septic system, a diversion of wastewater in 1968 has allowed Lake Washington to return to what has been recently described as a natural and healthy state. Yet is it accurate to characterize a lake as “recovered” based purely on chemical measurements? Does a legacy of pollution linger on in the ecology of a lake system long after the lake has been given a clean bill of health?Using paleolimological reconstructive techniques it is possible to compare pre-pollution and post-pollution communities of algae by looking at microfossils stored chronologically in the lake-bottom sediment. Use of this technique has afforded a test of the assumption that once pollution stress in a lake is alleviated, the algal communities quickly return to the pre-pollution state. Work on Lake Washington indicates that this does not always hold true. Instead, it suggests that a legacy of pollution persists in the algae and ecological community of the lake long after the nutrient levels have returned to normal.

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