Black spots for aquatic and terrestrial ecosystems: impact of a perennial cormorant colony on the environment

Klimaszyk, Piotr; Brzeg, Andrzej; Rzymski, Piotr; Piotrowicz, Ryszard

doi:10.1016/j.scitotenv.2015.02.067

Cited by 28 publications

(34 citation statements)

References 32 publications

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“…A single bird deposits over 4 g of N and 2.5 g of P daily beneath its roost or nest. Depending on cormorant density, the reported loads of deposited nutrients vary over a range of 181-1120 and 112-786 kg ha year -1 for N and P, respectively (Kameda et al, 2000;Goc et al, 2005;Klimaszyk et al, 2015b). These numbers are underestimated because they do not consider the delayed loads which are first accumulated on plants and then washed out during rainfall.…”

Section: Soil Chemistrymentioning

confidence: 99%

“…Over time cormorants, especially in dense colonies, increase N and P content in soil layers to extreme extents (Ligęza & Smal, 2003;Hobara et al, 2005;Kolb et al, 2012;Rush et al, 2013;Litaor et al, 2014;Klimaszyk et al, 2015b). However, even a small cormorant flock can induce a short-term rise in their concentrations, usually restricted to period the birds are present (Klimaszyk et al, 2015b).…”

Section: Soil Chemistrymentioning

confidence: 99%

“…However, even a small cormorant flock can induce a short-term rise in their concentrations, usually restricted to period the birds are present (Klimaszyk et al, 2015b). In the case of dense breeding or roosting colony areas, the levels of nutrients in the top soil layer are very high all year round, even when the birds are absent.…”

Section: Soil Chemistrymentioning

confidence: 99%

“…Upper horizons are usually characterized by a prevalence of organic N (Ishida, 1996;Ligęza & Smal, 2003). Generally, the content of N in organic and inorganic form in soils beneath cormorant colonies are increased 10-fold due to the birds' activity (Ligęza & Smal, 2003;Hobara et al, 2005;BreuningMadsen et al, 2010;Klimaszyk et al, 2015b). Sporadically, the N content can be even higher, e.g.…”

Section: Soil Chemistrymentioning

confidence: 99%

“…As these birds are generally gregarious, appear collectively, gather in flocks, nest in colonies and can feed on a relatively large area on various aquatic ecosystems simultaneously, they may constitute a very important biological factor triggering environmental changes (Kolb et al, 2010;Klimaszyk et al, 2015b). Therefore, the impact of cormorants on various elements of both the terrestrial and aquatic environment has been largely addressed in different studies.…”

Section: Introductionmentioning

confidence: 99%

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The complexity of ecological impacts induced by great cormorants

Klimaszyk

Rzymski

2015

Hydrobiologia

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Following decades of global extermination, the general population of the great cormorant (Phalacrocorax carbo L.) is on the rise. The lack of regular predators, highly skilled fish rapacity, rapid metabolism, significant rate of excretion and ability to form large nesting colonies on relatively small areas lead to numerous environmental consequences of cormorant presence. Here we comprehensively review the occurrence and distribution of this species and, in particular, its multi-faceted impact on terrestrial and aquatic ecosystems and the main routes through which these impacts are being manifested. The bird-induced chemical loading and its biological and ecological consequences, and the effects on microbial pollution and pathogen dispersion are discussed in particular. The need for further investigation to fully elucidate particular effects is stressed throughout the paper. It is concluded that the environmental effects of great cormorants are rather complex, can lead to serious ecosystem modifications and that the presence of these birds should be taken into consideration in ecological assessment and monitoring.

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Section: Soil Chemistrymentioning

confidence: 99%

Section: Soil Chemistrymentioning

confidence: 99%

Section: Soil Chemistrymentioning

confidence: 99%

Section: Soil Chemistrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The complexity of ecological impacts induced by great cormorants

Klimaszyk

Rzymski

2015

Hydrobiologia

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Bacterial Communities Along Environmental Gradients in Tropical Soda Lakes

et al. 2022

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Soda lakes environment is known to be variable and can have distinct differences according to geographical location. In this study, we investigated the effect of different environmental conditions of six adjacent soda lakes on bacterial communities and their functioning using a metagenomic approach combined with flow cytometry and chemical analyses. Ordination analysis using flow cytometry and water chemistry data from two sampling periods (wet and dry) clustered soda lakes in three different profiles: eutrophic turbid (ET), oligotrophic turbid (OT), and clear vegetated oligotrophic (CVO). Analysis of bacterial community composition and functioning corroborated this ordination; the exception was one ET lake, that was similar to one OT lake during the wet season, indicating drastic shifts between seasons. Microbial abundance and diversity increased during the dry period, along with a considerable number of limnological variables, all indicative of a strong effect of the precipitation-evaporation balance in these systems.Cyanobacteria were linked to high electric conductivity, pH, and nutrient availability, whereas Actinobacteria, Alphaproteobacteria, and Betaproteobacteria were correlated with landscape morphology variability (surface water, surface perimeter, and lake volume) and less stressed lake conditions. Stress response metabolism was overrepresented in ET and OT lakes and underrepresented in CVO lakes. Altogether, this study illustrated the sensitivity of tropical soda lakes to climate change, as slight changes in hydrological regimes might produce drastic shifts in community diversity.

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The influence of a seabird colony on abundance and species composition of water bears (Tardigrada) in Hornsund (Spitsbergen, Arctic)

et al. 2015

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Seabirds in the Arctic are known to link marine and terrestrial ecosystems. They feed in the sea and breed on land, where they deposit enormous amounts of guano. Soil in the vicinity of seabird colonies is much more enriched with nutrients as compared to areas beyond their impact, which positively affects primary and secondary production. Water bears (Tardigrada) are microinvertebrates which constitute a permanent and ubiquitous faunal component of polar regions. Here, we tested the influence of seabird guano on Tardigrada communities; we established two transects in Hornsund (SW Spitsbergen): (1) SEABIRD where little auks (Alle alle) nested, and (2) CONTROL, an area without a little auk colony. In total, we collected 160 moss, lichen and mixed (moss/lichen) samples from those areas. In total, we found 1990 specimens belonging to 32 taxa (25 identified to species level). The average density of water bears was higher in the SEABIRD transect (9.31 ind g -1 ), where mosses predominated over lichens, in comparison with the CONTROL transect (5.83 ind g -1 ), where more lichens occurred. Thus, ornithogenic enrichment of soil and locally facilitated development of mosses over lichens might be important factors responsible for the increase in invertebrate abundance. According to canonical correspondence analysis, the little auk colony effect explained 13.2 % of the tardigrade species composition, and this factor appeared to be more important than the vegetation type itself. Four taxa, i.e. Isohypsibius cf. reticulatus, Microhypsibius bertolanii, Minibiotus cf. formosus and Ramazzottius cf. rupeus, have been recorded in the Svalbard archipelago for the first time.

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Black spots for aquatic and terrestrial ecosystems: impact of a perennial cormorant colony on the environment

Cited by 28 publications

References 32 publications

The complexity of ecological impacts induced by great cormorants

The complexity of ecological impacts induced by great cormorants

Bacterial Communities Along Environmental Gradients in Tropical Soda Lakes

The influence of a seabird colony on abundance and species composition of water bears (Tardigrada) in Hornsund (Spitsbergen, Arctic)

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