Aquatic ecosystem assessment and management

Park, Young‐Seuk

doi:10.1051/limn/2016008

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…Consequently, the CCA evidenced a clear separation between Mining and Reference 1, where the former presents groups tolerant to conditions of high-water contamination by mining activity (e.g., some Chironomidae, Tipulidae and Empididae) (see Pond et al, 2014). These results coincide with the idea that point scales, variation in abundance or incidence of macroinvertebrate groups can be strongly modulated by the presence and availability of microhabitats (e.g., Park, 2016;Burgazzi, Guareschi & Laini, 2018).…”

Section: Discussionsupporting

confidence: 67%

Density and diversity of macroinvertebrates in Colombian Andean streams impacted by mining, agriculture and cattle production

Meza-Salazar

Guevara

Gomes-Días

et al. 2020

PeerJ

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Background Mining, agriculture and cattle production are activities that threaten the quality and quantity of water resources in the Colombian Andes. However, many drainage basins in this region have not been subjected to simultaneous evaluation of the impact these activities have on the density, diversity and composition of aquatic macroinvertebrates (AMI). The first two of these ecological variables are expected to decrease drastically from zones with no apparent impact towards areas with anthropogenic activity, which areas with mining will present the most impoverished AMI community. Methods We evaluated the density, diversity and composition dissimilarity of AMI in streams impacted by gold mining, agriculture and cattle production. Two reference streams were also studied. Six benthic samplings were conducted bimonthly (Feb 2014–Feb 2015) using a Surber net. Water samples were taken in order to make environmental evaluation among the aforementioned streams, including hydrological, physicochemical and bacteriological parameters (HPCB). Diversity was evaluated as the effective number of RTUs—recognizable taxonomic units—by comparing the richness, typical diversity, and effective number of the most abundant RTUs. Compositional dissimilarity was examined with nMDS and CCA analysis. Results A total of 7,483 organisms were collected: 14 orders, 42 families and 71 RTUs. Our prediction regarding the density and diversity of AMI (Reference > Cattle production > Agriculture > Mining) was partially fulfilled, since the agriculture-dominated stream presented a more impoverished AMI community than that of the gold mining stream. However, these streams presented lower diversity than the cattle production and reference streams, and the AMI density only differed significantly between one reference stream and the agriculture stream. The AMI composition in the agriculture-dominated stream clearly differed from that of the other streams. Discussion The observation of a more impoverished AMI community in agricultural production areas compared to those with mining or cattle production may reflect the importance of the remaining riparian vegetation, which was scarce at the stream with agricultural activity. Moreover, the low diversity, and mainly the reduced AMI richness, in the agriculture stream coincided with the absence of insect genera are intolerant to deterioration of the biological and physicochemical conditions of the water (e.g. Anacroneuria). Conclusions The results suggest that the local impact of agricultural activities may be of equal or greater magnitude than that of mining in terms of AMI density, diversity and composition, in the Colombian Andean riverscape. Future studies should systematically evaluate, throughout the annual cycle, the relative effects of the productive land use, the remaining native vegetation cover and the consequent changes in the HPCB parameters of the water on AMI communities in Colombian Andean basins.

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Section: Discussionsupporting

confidence: 67%

Density and diversity of macroinvertebrates in Colombian Andean streams impacted by mining, agriculture and cattle production

Meza-Salazar

Guevara

Gomes-Días

et al. 2020

PeerJ

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“…Smaller lakes' sediment core records tend to reflect local compositional changes over time, while larger bodies of water might display a uniform picture in general (larger bodies of water experience a broader range of environmental conditions). Responses of communities at large-scale levels are slow and often imprecise, but their ecological relevance is high due to the accumulating effects of disturbances or stresses on the system (Park, 2016). In this context, the advantage of a palaeolimnological approach is that for either a small or a large lake, it indicates conditions that existed before significant anthropogenic effects, which is the primary data necessary to determine the reference conditions or the so-called baseline to compare to the present-day situation.…”

Section: Present Environmental Conditions Setting and Site Selectionmentioning

confidence: 99%

Determining reference conditions of hemiboreal lakes in Latvia, NE Europe: a palaeolimnological approach

Stivriņš

Grudzinska²,

Elmi

et al. 2018

Ann. Limnol. - Int. J. Lim.

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The current status of a lake can be evaluated via monitoring, but such data can only provide information about the last few decades to a century at best. In most cases, the natural state of a lake cannot be ascertained. This is even more challenging if the apparent anthropogenic effects on the environment over the last millennia are considered. We used data on fossil algae from five evenly distributed hemiboreal lakes in geographically different regions in Latvia, NE Europe to assess the amount of compositional change or turnover (i.e., the beta-diversity) in the algae datasets for the last 2000 years by using a Detrended Canonical Correspondence Analysis. Our results show that the algae turnover increases towards the present day with distinct shifts during times characterised by extensive and intensive agriculture establishment, and political and economic changes. Because the anthropogenic impact on the landscape and lakes before AD 1200 was relatively minor, we propose that algae composition at that time can be assumed to represent the natural reference conditions for most Latvian lakes.

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“…The reliable monitoring and assessment of water resources is fundamental for effective management of water quality and aquatic ecosystems [1]. Traditionally, physicochemical parameters have been used to assess the quality of water resources.…”

Section: Introductionmentioning

confidence: 99%

Ecological Monitoring, Assessment, and Management in Freshwater Systems

Park

Hwang

2016

Water

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Ecological monitoring and assessment is fundamental for effective management of ecosystems. As an introduction to this Special Issue, this editorial provides an overview of "Ecological Monitoring, Assessment, and Management in Freshwater Systems". This issue contains a review article on monitoring surface waters, and research papers on data management, biological assessment of aquatic ecosystems, water quality assessment, effects of land use on aquatic ecosystems, etc. The papers in this issue contribute to the existing scientific knowledge of freshwater ecology. They also contribute to the development of more reliable biological monitoring and assessment methods for sustainable freshwater ecosystems and ecologically acceptable decision-making policies, and establishment of practices for effective ecosystem management and conservation.

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Aquatic ecosystem assessment and management

Cited by 5 publications

References 21 publications

Density and diversity of macroinvertebrates in Colombian Andean streams impacted by mining, agriculture and cattle production

Density and diversity of macroinvertebrates in Colombian Andean streams impacted by mining, agriculture and cattle production

Determining reference conditions of hemiboreal lakes in Latvia, NE Europe: a palaeolimnological approach

Ecological Monitoring, Assessment, and Management in Freshwater Systems

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