Contrasting responses of phytoplankton and benthic algae to recent nutrient enrichment in Arctic tundra ponds

2015 ◽  
Vol 60 (10) ◽  
pp. 2169-2186 ◽  
Author(s):  
Vanessa L. Lougheed ◽  
Christina Hernandez ◽  
Christian G. Andresen ◽  
Nickole A. Miller ◽  
Vera Alexander ◽  
...  
Keyword(s):  
Nutrient Enrichment ◽  
Benthic Algae ◽  
Arctic Tundra ◽  
Tundra Ponds

Impact of Catchment Urbanisation on Lake Macquarie (Australia)

1989 ◽  
Vol 21 (2) ◽  
pp. 205-210 ◽  
Author(s):  
B. L. Simmons ◽  
S. L. Trengove
Keyword(s):  
Nutrient Enrichment ◽  
Benthic Algae ◽  
Water Clarity ◽  
Nutrient Concentrations ◽  
Lake Area ◽  
Seagrass Beds ◽  
Coastal Lake ◽  
Aesthetic Quality ◽  
Wastewater Disposal ◽  
Coastal Lakes

Increasing urbanisation of coastal areas is leading to impacts on coastal lakes which decrease their amenity for recreation and tourism. Runoff and wastewater discharge cause siltation, impact seagrass beds and change the characteristics of open waters, affecting boating, swimming, fishing and the aesthetic quality of the locale. Management of urban development and wastewater disposal is required to minimise sedimentation and nutrient enrichment. This could include development restrictions, runoff controls and a strategy for wastewater treatment and discharge. The catchment of Lake Macquarie, a marine coastal lake, has been progressively urbanised since 1945. Urbanisation, through increased stormwater runoff and point source discharges, has caused a major impact on the lake in terms of sedimentation and nutrient enrichment. Losses of lake area and navigable waters have occurred. Accompanying problems include changes in the distribution of seagrass beds and nuisance growths of benthic algae. Since the 1950's, dry weather nutrient concentrations have increased and mean water clarity has decreased. Severe problems, as observed in other New South Wales coastal lakes, for example benthic algae in Lake Illawarra and Tuggerah Lakes, have not yet developed. Because of the lead time taken to implement policies and controls, trends should be identified and policies developed now so as to avoid nutrient buildup and development of sustained problems.

Impacts of golf course construction and operation on headwater streams: bioassessment using benthic algae

2003 ◽  
Vol 81 (8) ◽  
pp. 848-858 ◽  
Author(s):  
Jennifer G Winter ◽  
Peter J Dillon ◽  
Carolyn Paterson ◽  
Ron A Reid ◽  
Keith M Somers
Keyword(s):  
Nutrient Enrichment ◽  
Headwater Streams ◽  
Benthic Algae ◽  
Golf Course ◽  
Golf Courses ◽  
Algal Communities ◽  
Precambrian Shield ◽  
Filamentous Green Algae ◽  
Algal Groups ◽  
Under Construction

The influence of golf course operation and construction on benthic algal communities in headwater streams on the Precambrian Shield was investigated using a reference condition approach. Streams were sampled for water chemistry and epilithic benthic algae on operational golf courses, on courses under construction, and from nearby minimally impacted reference locations. Epilithic diatom community structure was different in reference streams than in operational golf course streams, the latter indicating nutrient enrichment, higher pH, and disturbance. Full counts of diatoms and soft algae revealed that there was a lower proportion of diatoms relative to other algal groups, cyanobacteria in particular, in operational golf course streams compared with samples from reference locations. Dominance by a single taxon was also significantly higher in operational golf course streams. Although differences relative to the reference streams were less marked for the streams on courses under construction, full counts of diatoms and soft algae provided evidence of disturbance and nutrient enrichment. In particular, high proportions of filamentous green algae were recorded. Overall, our results indicate that golf course land management on the Shield is associated with significant differences in the abundance of certain benthic algal taxa in headwater streams.Key words: diatoms, periphyton, biomonitoring, golf courses, canonical correspondence analysis (CCA), Precambrian Shield.

Crude Oil Biodegradation in Arctic Tundra Ponds

ARCTIC ◽  
1978 ◽  
Vol 31 (3) ◽  
Author(s):  
Peggy E. Bergstein ◽  
J. Robie Vestal
Keyword(s):  
Crude Oil ◽  
Arctic Tundra ◽  
Oil Biodegradation ◽  
Tundra Ponds

scholarly journals Weak mineralization despite strong processing of dissolved organic matter in Eastern Arctic tundra ponds

2020 ◽  
Author(s):  
Isabelle Laurion ◽  
Philippe Massicotte ◽  
Flora Mazoyer ◽  
Karita Negandhi ◽  
Natalie Mladenov
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Arctic Tundra ◽  
Tundra Ponds

scholarly journals Responses of benthic algae to nutrient enrichment in a shallow lake: Linking community production, biomass, and composition

2019 ◽  
Vol 64 (10) ◽  
pp. 1833-1847 ◽  
Author(s):  
Amanda R. McCormick ◽  
Joseph S. Phillips ◽  
Anthony R. Ives
Keyword(s):  
Shallow Lake ◽  
Nutrient Enrichment ◽  
Benthic Algae ◽  
Community Production

Mosses and lichens of Shokalsky Island (Kara Sea, Yamal-Nenets Autonomous Area)

2020 ◽  
Vol 54 (2) ◽  
pp. 497-513 ◽  
Author(s):  
L. N. Beldiman ◽  
I. N. Urbanavichene ◽  
V. E. Fedosov ◽  
E. Yu. Kuzmina
Keyword(s):  
Plant Communities ◽  
Species Distribution ◽  
Arctic Tundra ◽  
Kara Sea ◽  
Lichenicolous Fungi ◽  
South West ◽  
West Part ◽  
First Time ◽  
Nenets Autonomous ◽  
Made In

We studied in detail a moss-lichen component of Shokalsky Island vegetation for the first time and identified 79 species of mosses and 54 species and 2 subspecies of lichens and lichenicolous fungi. All species of mosses and 23 species and 2 subspecies of lichens and lichenicolous fungi are recorded for the first time for the island. The study is based on collections made in South West part of the island, in arctic tundra. We also explored the participation of the mosses and lichens in the main types of plant communities and the species distribution in 10 ecotopes. The paper describes the noteworthy findings (Abrothallus parmeliarum, Aongstroemia longipes, Arthonia peltigerea, Caloplaca caesiorufella, Catillaria stereocaulorum, Ceratodon heterophyllus, Lecanora leptacinella, Sphagnum concinnum, S. olafii) and features of bryo- and lichenoflora of Shokalsky Island.

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