{"title":"Does the world need faunists? Based on rotifer (Rotifera) occurrence reflections on the role of faunistic research in ecology","authors":"Jolanta Ejsmont-Karabin","doi":"10.1002/iroh.201901991","DOIUrl":"10.1002/iroh.201901991","url":null,"abstract":"<p>Most faunistic studies of large-scale patterns concern terrestrial vertebrates, whereas smaller organisms, and in particular, freshwater invertebrates like rotifers receive less attention. As a result, the “rotiferologists” effect”, that is sampling intensity, is among the most influential factors observed, globally or locally, on species richness.</p><p>Because there are many more small, isolated patches of habitats available to the specialist species, greater specialization has occurred in those forms than in ubiquitous species. This rule also applies to rotifers. Results show that: (a) the total number of rotifer species observed in a lake depends on both the number of samples collected and the type and number of lake habitats involved; and (b) the originality (variability) of rotifer fauna in particular lakes is more pronounced with the more species found in a lake.</p><p>The important purpose of faunistic studies is the registration of indigenous species. The inflow of alien species is currently one of the greatest threats to the preservation of natural fauna. However, if we do not recognize the composition of natural communities, we will not be able to recognize the invaders. The second most important goal is to enable tracking of long-term changes in species diversity of rotifer fauna. Rotifers seem to be sensitive enough to climate change and pollution of the aquatic environment. Thus, for the reasons described above, faunistics will be still necessary.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 3-4","pages":"49-56"},"PeriodicalIF":1.9,"publicationDate":"2019-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201901991","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42872464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research on aquatic ecosystems – freshwater and marine environments and their management","authors":"","doi":"10.1002/iroh.201971010","DOIUrl":"10.1002/iroh.201971010","url":null,"abstract":"","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 1-2","pages":"1"},"PeriodicalIF":1.9,"publicationDate":"2019-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201971010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48510957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ali Serhan Tarkan, Erdi G. Tepeköy, Uğur Karakuş, Nildeniz Top, Lorenzo Vilizzi
{"title":"Plasticity in the feeding ecology of native Ponto-Caspian gobies suggests establishment success in their nonnative range","authors":"Ali Serhan Tarkan, Erdi G. Tepeköy, Uğur Karakuş, Nildeniz Top, Lorenzo Vilizzi","doi":"10.1002/iroh.201801974","DOIUrl":"10.1002/iroh.201801974","url":null,"abstract":"<p>The feeding ecology of the two gobiid species monkey goby <i>Neogobius fluviatilis</i> and western tubenose goby \u0000<i>Proterorhinus semilunaris</i> was studied in four natural lakes of the Marmara Region (NW Turkey), with special emphasis on seasonal and ontogenetic shifts in diet. Both species had similar food composition consisting of zooplankton and detritus. However, diet composition of both species significantly varied amongst lakes, and particularly so for \u0000<i>P. semilunaris</i> with seasonal and ontogenetic differences. Diet composition and seasonal/ontogenetic differences were overall similar to other populations of these gobiid species from both their native and nonnative ranges. The present findings suggest high plasticity in the diet of these two gobies, which can opportunistically utilize available food resources.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 3-4","pages":"57-67"},"PeriodicalIF":1.9,"publicationDate":"2019-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201801974","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45549288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cecilia Laspoumaderes, Marcela Bastidas Navarro, María S. Souza, Beatriz Modenutti, Esteban Balseiro
{"title":"Effect of ultraviolet radiation on clearance rate of planktonic copepods with different photoprotective strategies","authors":"Cecilia Laspoumaderes, Marcela Bastidas Navarro, María S. Souza, Beatriz Modenutti, Esteban Balseiro","doi":"10.1002/iroh.201801960","DOIUrl":"10.1002/iroh.201801960","url":null,"abstract":"<p>We studied two populations of <i>Boeckella gracilipes</i> and two populations of <i>Boeckella gibbosa</i> that inhabit mountain lakes from North-Patagonian Andes with different optical properties. We combined field and laboratory experiments to determine the effects of ultraviolet radiation (UVR) on clearance rate among these taxa that had different UVR defences. The copepod populations differed in photoprotective compounds (carotenoids and mycosporine-like amino acids [MAAs]) and antioxidant enzymes (glutathione S-transferase [GST]). These variations were related to elevation, dissolved organic carbon content and the optical features of the inhabited lakes. Laboratory experiments showed a decrease in the clearance rate (CR) in all populations exposed to UVR. Consistently, the long-term field experiment showed a negative impact of UVR on CR. We conclude that UVR exposure affects feeding, however, the magnitude of this negative effect depends on the exposure intensity and the photoprotective mechanisms used by zooplankton.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 1-2","pages":"34-44"},"PeriodicalIF":1.9,"publicationDate":"2019-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201801960","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41784839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research on aquatic ecosystems–freshwater and marine environments and their management","authors":"","doi":"10.1002/iroh.201870031","DOIUrl":"https://doi.org/10.1002/iroh.201870031","url":null,"abstract":"","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"103 5-6","pages":"83"},"PeriodicalIF":1.9,"publicationDate":"2019-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201870031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137531544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dietrich Uhlmann: A Passionate Scientist and an Outstanding Academic Teacher","authors":"","doi":"10.1002/iroh.201870033","DOIUrl":"10.1002/iroh.201870033","url":null,"abstract":"","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"103 5-6","pages":"85-89"},"PeriodicalIF":1.9,"publicationDate":"2019-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201870033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48807732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anderson L. Vargas, Jayme M. Santangelo, Reinaldo L. Bozelli
{"title":"Recovery from drought: Viability and hatching patterns of hydrated and desiccated zooplankton resting eggs","authors":"Anderson L. Vargas, Jayme M. Santangelo, Reinaldo L. Bozelli","doi":"10.1002/iroh.201801977","DOIUrl":"10.1002/iroh.201801977","url":null,"abstract":"<p>Many zooplankton organisms produce resting eggs before harsh environmental conditions. After aquatic systems are recovered, animals hatch from resting eggs and help re-establish active communities. However, although the ability of resting eggs to survive desiccation is largely known, it is unclear to what extent the duration of desiccation affects the viability and hatching patterns of resting eggs. In this study, we assessed the viability of resting egg banks in naturally wet and dry sediments through ex-situ hatching experiments. In addition, we simulated dry out episodes of different durations (2 and 8 months) in wet sediments originating from temporary systems. We observed hatchlings of rotifers, cladocerans, copepods, ostracods, and anostracans in wet and dry sediments. Drying the sediments for different durations did not change the species richness and composition of hatchlings, possibly because temporary systems select for species and genotypes that are more prone to producing resting eggs, which survive desiccation. However, some species were stimulated to hatch after desiccation, suggesting that desiccation might help break the dormancy of resting eggs from temporary systems. Desiccation intervals up to 8 months likely do not affect the viability of resting eggs from temporary systems. Since many lakes are about to experience unpredictable droughts owing to human activities and ongoing global changes, the ability of resting eggs to tolerate desiccation will play a key role in zooplankton community recovery.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 1-2","pages":"26-33"},"PeriodicalIF":1.9,"publicationDate":"2019-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201801977","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41523660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mabano Amani, Manuel A. S. Graça, Verónica Ferreira
{"title":"Effects of elevated atmospheric CO2 concentration and temperature on litter decomposition in streams: A meta-analysis","authors":"Mabano Amani, Manuel A. S. Graça, Verónica Ferreira","doi":"10.1002/iroh.201801965","DOIUrl":"10.1002/iroh.201801965","url":null,"abstract":"The metabolism of forest streams depends on the decomposition of plant litter of terrestrial origin. In turn, the rate at which litter decomposes depends on litter characteristics, decomposer activity, environmental characteristics, and their interactions. Atmospheric changes, such as increases in atmospheric carbon dioxide concentration ([CO 2 ]) and in temperature, may affect all these variables. Here, we report the results of a meta ‐ analysis of 41 studies conducted worldwide between 1993 and 2017 on the effects of elevated atmospheric [CO 2 ], elevated temperature, or both (temperature + [CO 2 ]) on litter decomposition in streams. Elevated temperature significantly increased litter decomposition rates, whereas elevated [CO 2 ] and temperature + [CO 2 ] did not significantly affect litter decomposition rates. The effect of elevated temperature did not depend on the type of study (i.e., laboratory or field study, correlative field or manipulative field study) but in correlative field studies, the temperature effect was stronger over latitudinal than altitudinal gradients. Effects of elevated temperature also did not depend on the type of decomposer community (microbial or microbial and macroinvertebrates) but effects were always significant for total litter decomposition (both microbes and macroinvertebrates involved), whereas microbial ‐ driven litter decomposition was significantly affected only in manipulative studies. Effects of elevated temperature did not depend on the litter identity, although significant effects were found for some litter genera but not others. In terrestrial ecosystems, the elevated temperature was found to increase litter decomposition rates, whereas elevated [CO 2 ] decreased litter decomposition rates. Study type (laboratory or field) and litter identity were important moderators of the response of litter decomposition to elevated temperature and [CO 2 ] in terrestrial ecosystems. These differences between soil and stream ecosystems may be partially due to intrinsic differences (such as moisture that is not limiting in streams) between these ecosystems. In addition, our meta ‐ analysis is geographically biased with most studies being conducted in Europe. More studies in other parts of the world could allow for a better understanding of the effects of climate warming and [CO 2 ] increases on litter decomposition, the global carbon cycle, and biochemistry in streams.","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 1-2","pages":"14-25"},"PeriodicalIF":1.9,"publicationDate":"2019-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201801965","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47891843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nickolai Shadrin, Vladimir Yakovenko, Elena Anufriieva
{"title":"Suppression of Artemia spp. (Crustacea, Anostraca) populations by predators in the Crimean hypersaline lakes: A review of the evidence","authors":"Nickolai Shadrin, Vladimir Yakovenko, Elena Anufriieva","doi":"10.1002/iroh.201801966","DOIUrl":"10.1002/iroh.201801966","url":null,"abstract":"<p><i>Artemia</i> spp. play a key role in hypersaline ecosystems. <i>Artemia</i> can live in a salinity range from 10 to 300–340 g/L, but in water bodies where salinity is between 10 and 100 g/L, it may be absent. Is the absence of <i>Artemia</i> in some Crimean lakes determined by the presence of predators or by salinity? To answer this question field long-term and experimental data collected in the Crimean lakes were used. With the least probability, the populations of <i>Artemia</i> existed in the lakes with a salinity of up to 50 g/L or above 300 g/L. Self-reproducing <i>Artemia</i> populations (all age stages) were most likely (≥80% of occurrence) noted in the salinity range of 150–200 g/L. Long-term monitoring in two lakes showed that in different years, a significant negative correlation of <i>Artemia</i> abundance with the numbers of amphipod <i>Gammarus aequicauda</i> and ostracod <i>Eucypris mareotica</i> was found in both lakes. This correlation can be explained by ostracod and amphipod predation on <i>Artemia</i>. In years without predator populations, the number of <i>Artemia</i> was higher by several times. Experiments showed that these amphipods and ostracods consume brine shrimps of different developmental stages. There are at least 12 crustacean species, 5 insect species, and 2 fish species, all listed in this paper, which inhabit Crimean hypersaline waters and can eat <i>Artemia</i>. Their predation on <i>Artemia</i> often is a main cause of its absence in the salinity range from 10 to 150 g/L.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 1-2","pages":"5-13"},"PeriodicalIF":1.9,"publicationDate":"2019-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201801966","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43345991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leilane T. F. Schwind, Rodrigo L. Arrieira, Tatiane Mantovano, Luiz F. M. Velho, Claudia C. Bonecker, Fábio A. Lansac-Tôha
{"title":"Testate amoebae as indicators for suspended inorganic material in floodplains influenced by dam","authors":"Leilane T. F. Schwind, Rodrigo L. Arrieira, Tatiane Mantovano, Luiz F. M. Velho, Claudia C. Bonecker, Fábio A. Lansac-Tôha","doi":"10.1002/iroh.201801949","DOIUrl":"10.1002/iroh.201801949","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <p>The construction of reservoirs impacts upon freshwater ecosystems, since it changes the hydrodynamics of the entire system upstream and downstream of the dam due to flow control and changes in environmental conditions. We analyzed the temporal variation in the abundance of exogenous testate amoebae related to the suspended inorganic material in Neotropical floodplain lakes, downstream of a series of dams. Sampling was carried out between 2000 and 2012 in six lakes in the upper Paraná River floodplain. The temporal variation in the abundance of the testate amoeba community was analyzed using the Threshold Indicator Taxa Analysis. <i>Cucurbitella crateriformis</i>, <i>Protocucurbitella coroniformes</i>, and <i>C dentata</i> f. <i>quinquilobata</i> had reduced population growth in higher concentrations of suspended inorganic material. On the other hand, <i>Difflugia lobostoma</i>, <i>Centropyxis ecornis</i>, and <i>Difflugia pseudogramen</i> populations increased under these conditions. These results showed that an increased flow of water could favor the growth of some populations due to the greater exchange of material between the lakes and the floodplain. The positive or negative responses could show better adaptation of the testate amoeba species to the planktonic environment. Furthermore, these results also highlighted the bioindicator role of these protozoa in aquatic ecosystems.</p>\u0000 </section>\u0000 </div>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"103 5-6","pages":"113-119"},"PeriodicalIF":1.9,"publicationDate":"2019-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201801949","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47462937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}