HydrobiologiaPub Date : 2024-08-19DOI: 10.1007/s10750-024-05683-3
Namrata Giri, Brian G. Laub
{"title":"Spatiotemporal dynamics of basal food web resources and diatom and macroinvertebrate communities in a subtropical stream","authors":"Namrata Giri, Brian G. Laub","doi":"10.1007/s10750-024-05683-3","DOIUrl":"https://doi.org/10.1007/s10750-024-05683-3","url":null,"abstract":"<p>Seasonal changes in biotic communities and basal food web resources, including algae and organic matter, have been well studied in temperate environments but less so in subtropical streams. We assessed spatiotemporal variation in algal biomass, measured as ash-free dry mass (AFDM) and chlorophyll-a, coarse (CPOM) and fine (FPOM) particulate organic matter, macroinvertebrate communities, and diatom communities in a subtropical stream in south-central Texas over three years at multiple habitat types. Linear mixed models revealed seasonality significantly influenced AFDM, chlorophyll-a, CPOM, and FPOM. Canonical correspondence analysis revealed strong seasonal changes in diatom but not macroinvertebrate communities. Seasonal patterns generally matched those of temperate latitudes but with altered timing, including algal biomass peaks in winter as opposed to spring and CPOM peaks in spring as opposed to fall. Leaf loss and regrowth and seasonal hydrologic variability likely caused seasonal patterns, similar to mechanisms in temperate streams. Within seasons, physical habitat influenced patch-scale biomass of algae and organic matter, and macroinvertebrate communities showed stronger responses to physical habitat than seasonality. Although seasonal changes of basal food web resources were similar to patterns in temperate streams, differences in timing and across biotic communities may influence food web structure and function in subtropical streams.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"7 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175785","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}
HydrobiologiaPub Date : 2024-08-19DOI: 10.1007/s10750-024-05667-3
Tatiane Mantovano, Dayani Bailly, Eliezer de Oliveira da Conceição, Edivando Vitor do Couto, Gilmar Perbiche Neves, Leidiane Pereira Diniz, Dyego Leonardo Ferraz Caetano, Fábio Amodêo Lansac-Tôha
{"title":"Anticipating the impacts of climate change on diaptomid copepod richness in the La Plata Basin: insights for conservation planning and climate refuge identification","authors":"Tatiane Mantovano, Dayani Bailly, Eliezer de Oliveira da Conceição, Edivando Vitor do Couto, Gilmar Perbiche Neves, Leidiane Pereira Diniz, Dyego Leonardo Ferraz Caetano, Fábio Amodêo Lansac-Tôha","doi":"10.1007/s10750-024-05667-3","DOIUrl":"https://doi.org/10.1007/s10750-024-05667-3","url":null,"abstract":"<p>Global biodiversity faces imminent threats from climate change, altering species distribution. This study forecasts climate change's impact on diaptomid copepods richness in the La Plata Basin, identifying crucial refuge areas. We hypothesized that rising temperatures will exert in a negative impact on copepod diversity. We utilized climatic and environmental variables to model the geographic distribution diaptomid copepod species. The model forecasts unveiled a contraction in copepod distribution under future climate scenarios. The outcomes from our species richness analysis suggest a potential loss of diaptomid copepod species in the end of the century. Interestingly, certain tributaries of the Paraná River, integral components of the La Plata basin, emerge as prospective climate refuges for these species by 2080. Given the susceptibility of many rivers in the basin to damming and the anticipated severe impacts of climate change on these environments, the findings hold practical implications for strategic conservation planning, emphasizing the importance of maintaining rivers free from dams and promoting the restoration of degraded areas within identified climate refuges. By elucidating the potential consequences of climate change on diaptomid copepod populations, our research contributes valuable knowledge to the broader scientific understanding of the intricate interplay between climate change and freshwater biodiversity.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"4 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175816","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":"Weak congruence between biological assemblages of streams and their relationship with the environmental gradient in the Cerrado–Amazon transition area, Brazil","authors":"Rafaela Jemely Rodrigues Alexandre, Luciano Fogaça de Assis Montag, Karina Dias-Silva, Leandro Schlemmer Brasil, Leonardo Maracahipes-Santos, Joana Darc Batista, Thiago Bernardi Vieira","doi":"10.1007/s10750-024-05672-6","DOIUrl":"https://doi.org/10.1007/s10750-024-05672-6","url":null,"abstract":"<p>Surrogate groups are used to find indicator groups and are a fast and effective way to assess biodiversity. For a surrogate group to be efficient, it needs to have strong congruence between different or similar groups. Understanding the surrogate groups in this area with high deforestation rates is extremely important to avoid or minimize the loss of biodiversity, which is severely threatened. The objective was to evaluate the congruence between fish assemblages, Heteroptera, and Odonata in streams in the Amazon–Cerrado transition area. The results showed weak congruence between Odonata and Heteroptera for both data sets. Discordant Odonata and fish showed weak but significant congruence with the abundance data, and with the incidence data the congruence was not significant. A similar result was obtained in the analysis of fish and Heteroptera, which were not congruent with any of the data sets used. The variance partition test, with abundance data, showed that both environmental and spatial variations are responsible for structuring the Heteroptera community, diverging from fish and Odonata did not respond to any of the variations verified, with incidence and abundance data, showing no relationship with environmental and spatial variations. Suggesting Odonata as a surrogate group for this region.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"31 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175787","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}
HydrobiologiaPub Date : 2024-08-17DOI: 10.1007/s10750-024-05673-5
Gisele Moreira dos Santos, Jean C. G. Ortega, Luis Mauricio Bini
{"title":"The dimensionality of biodiversity of stream insects in the conterminous US: 2!","authors":"Gisele Moreira dos Santos, Jean C. G. Ortega, Luis Mauricio Bini","doi":"10.1007/s10750-024-05673-5","DOIUrl":"https://doi.org/10.1007/s10750-024-05673-5","url":null,"abstract":"<p>The analyses of the dimensionality of biodiversity are key to improve our understanding of processes shaping local communities. Here, we used a dataset on stream insects to estimate the dimensionality of biodiversity at the scale of the conterminous United States. We also assessed which facets of biodiversity maximized stream differentiation, which complexes of biodiversity measures were formed, and how these biodiversity measures were correlated with an environmental gradient across stream sites. In general, we found that two sets of biodiversity measures maximized the differentiation among streams. The first set was composed by indices reflecting the taxonomic relationships among taxa and trait diversity measures, whereas the second set was composed by indices reflecting trait richness, genus richness, and Pielou’s evenness. We found that only the first set of indices was correlated with an environmental gradient across the USA and that the higher the importance of a biodiversity measure to differentiate streams, the higher its relationship with the environmental gradient. These results support the view that different facets provide complementary insights into spatial patterns of biodiversity of stream insects and that measures that consider the taxonomic relatedness among taxa and trait information are the most responsive to the identified environmental gradient.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"105 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175786","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}
HydrobiologiaPub Date : 2024-08-17DOI: 10.1007/s10750-024-05676-2
Kaitlyn O’Mara, Michael Venarsky, Ben Stewart-Koster, Glenn B. McGregor, Cameron Schulz, Jonathan Marshall, Stuart E. Bunn
{"title":"Hydrological connectivity and environment characteristics explain spatial variation in fish assemblages in a wet–dry tropical river","authors":"Kaitlyn O’Mara, Michael Venarsky, Ben Stewart-Koster, Glenn B. McGregor, Cameron Schulz, Jonathan Marshall, Stuart E. Bunn","doi":"10.1007/s10750-024-05676-2","DOIUrl":"https://doi.org/10.1007/s10750-024-05676-2","url":null,"abstract":"<p>Hydrological connectivity in river systems facilitates the movement of animals across riverine landscapes and influences fish habitat but is threatened by climate change and water resource developments. We studied fish assemblages across a large wet–dry tropical river system in northern Australia that is under consideration for new agricultural and water resource developments, which are expected to alter hydrological connectivity. We explored relationships between the environment and several biotic variables; fish taxonomic composition, species turnover, and species trait presence, quantifying how they were related to hydrological connectivity. Environmental dissimilarity of sites was influenced by hydrological connectivity variables, including flow, elevation, and river distance. Environment characteristics and hydrological connectivity together were important predictors of fish taxonomic composition. Fish species turnover was highest in headwater sites, and species presence absence was related to feeding and reproductive traits. Our results suggest that habitat specialists and species with reproductive traits that depend on hydrological connectivity, such as diadromous species, are most vulnerable to declines in relative abundance following a reduction in connectivity, which would lead to range contractions within catchments. Maintaining habitats that support taxonomically and functionally unique fish assemblages, such as wetlands and headwater streams, is important for maintaining biodiversity.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"132 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175798","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}
HydrobiologiaPub Date : 2024-08-16DOI: 10.1007/s10750-024-05668-2
Boris A. Levin, Aleksandra S. Komarova, Alexei V. Tiunov, Alexander S. Golubtsov
{"title":"Liem’s paradox in parallel trophic diversifications of polyploid fish: from preadaptive polymorphism to trophic specialization","authors":"Boris A. Levin, Aleksandra S. Komarova, Alexei V. Tiunov, Alexander S. Golubtsov","doi":"10.1007/s10750-024-05668-2","DOIUrl":"https://doi.org/10.1007/s10750-024-05668-2","url":null,"abstract":"<p>The polyploid lineage of the cyprinid genus <i>Labeobarbus</i> provides an excellent model for studying trophic-driven adaptive radiations. Four recently discovered diversifications in rivers of the Ethiopian Highlands (East Africa) show independent repeated evolutions of mouth polymorphisms each represented by four mouth phenotypes: (1) generalized, (2) thick-lipped, (3) scraping, and (4) large-mouthed. Using stable isotope and gut content analyses, we tested hypothesis on the partitioning of trophic resources within each radiation and revealed differences in degree of diversification between radiations. Three out of four radiations showed partitioning of trophic resources within five trophic niches: (1) detritophagy, (2) macrophytophagy, (3) benthophagy, (4) periphyton feeding, and (5) piscivory. The radiations are likely to be at different stages of diversification. One radiation with a similar set of mouth phenotypes was not trophically divergent and showed a remarkable decoupling of form and function. A case of ecologically non-functional mouth polymorphism is a bright example of the Liem’s paradox and supports a concept of the plasticity-first evolution. This might be based on pre-existing genomic templates inherited from ancestral lineages that participated in the polyploidization of the <i>Labeobarbus</i> lineage. Predetermined and preadaptive mouth polymorphism can be considered a key innovation of <i>Labeobarbus</i> that promotes to resource-based diversification.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"150 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175788","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}
HydrobiologiaPub Date : 2024-08-13DOI: 10.1007/s10750-024-05669-1
Emanuel Rampanelli Cararo, Renan de Souza Rezende
{"title":"Effects of riparian forest and annual variation in stream environmental conditions on leaf litter breakdown and invertebrate communities in highland grassland streams","authors":"Emanuel Rampanelli Cararo, Renan de Souza Rezende","doi":"10.1007/s10750-024-05669-1","DOIUrl":"https://doi.org/10.1007/s10750-024-05669-1","url":null,"abstract":"<p>Leaf litter breakdown is a critical process in streams, as it plays a significant role in influencing food webs and biogeochemical cycles. Highland grasslands are often understudied landscapes, yet they are an excellent model system for evaluating how natural differences in riparian forest cover can influence litter breakdown in streams. We experimentally examined the effects of the presence and absence of riparian forest on temporal leaf litter breakdown and the associated biota in highland grassland streams. The 3-year experiment examined leaf litter breakdown in three stream reaches with riparian forest and three without. The results indicate that temperature could potentially mediate the temporal dynamics of leaf litter breakdown (mainly fine mesh) and the associated biota in highland grassland streams. No differences were found in leaf breakdown between stream reach types, but there was evidence of an increase in invertebrate density. Finally, leaf litter breakdown in the highland grasslands was more affected by annual variation than riparian forest presence, suggesting a context-dependent relationship.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"85 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175791","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}
HydrobiologiaPub Date : 2024-08-12DOI: 10.1007/s10750-024-05654-8
Tetsumi Takahashi
{"title":"Habitat structures and reproductive features suggesting a maintenance mechanism of reproductive isolation between ecomorphs of a herbivorous cichlid fish from Lake Tanganyika","authors":"Tetsumi Takahashi","doi":"10.1007/s10750-024-05654-8","DOIUrl":"https://doi.org/10.1007/s10750-024-05654-8","url":null,"abstract":"<p>Ecological speciation, driven by divergent selection across varying environments, is crucial for the evolution of biodiversity. To comprehend this phenomenon fully, investigating ongoing speciation events is imperative. <i>Telmatochromis temporalis</i>, a herbivorous cichlid endemic to Lake Tanganyika, recently revealed the existence of a slender morph inhabiting deep waters. Despite genetic similarity, it is reproductively isolated from the parapatric population of the normal morph inhabiting shallow waters. This study examined substrate features and life history traits to propose a mechanism that maintains the parapatric distribution, which likely contributes to reproductive isolation. The normal morph displayed a preference for natural shelters between rocks and invested significant energy on reproduction, likely well-adapted to shallow waters abundant in natural shelters and food resources. In contrast, the slender morph seemed to construct nests beneath rocks tailored to its body size and exhibited energy-saving reproduction, likely suited to deep waters with scarce natural shelters and food resources. These adaptive differences are likely responsible for parapatric distribution. Additionally, I discussed the potential for the slender morph and another morph, the dwarf morph, to have evolved in parallel from the normal morph through divergent natural selection, depending on the environmental challenges faced by the normal morph.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"10 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175790","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}
HydrobiologiaPub Date : 2024-08-12DOI: 10.1007/s10750-024-05662-8
Ana Beatriz Alves Bennemann, Jéssica Fernanda Ramos Coelho, Pedro Hollanda-Carvalho, Fabio Di Dario, João Luiz Gasparini, Ricardo Marques Dias, Liana de Figueiredo Mendes, Sergio Maia Queiroz Lima
{"title":"Temperature and depth drive population structure of the scaled sardine (Harengula sp.) in the western South Atlantic","authors":"Ana Beatriz Alves Bennemann, Jéssica Fernanda Ramos Coelho, Pedro Hollanda-Carvalho, Fabio Di Dario, João Luiz Gasparini, Ricardo Marques Dias, Liana de Figueiredo Mendes, Sergio Maia Queiroz Lima","doi":"10.1007/s10750-024-05662-8","DOIUrl":"https://doi.org/10.1007/s10750-024-05662-8","url":null,"abstract":"<p>Understanding environmental features that impact population structure in marine systems is fundamental for sustainable fisheries management. In sardines and herrings, temperature is usually indicated as an important attribute in recruitment. Here, we investigate the hypothesis of additional structuring along the Brazilian coast in the scaled sardine <i>Harengula</i> sp. and possibility of using the highly variable mitochondrial control region as a molecular marker along continuous studies. We sequenced the mitochondrial control region of 152 individuals of <i>Harengula</i> sp. from 10 locations along the Brazilian coast and the archipelagoes of Fernando de Noronha (FNO, oceanic) and Abrolhos (ABR, continental) in the western South Atlantic. Analyses of molecular variance and haplotype network indicate that <i>Harengula</i> sp. is structured in three populations: one in FNO, isolated from the mainland by depth; and two in the Brazilian coast, mainly separated by temperature. Considering that FNO is a marine protected area and that sardines from this archipelago form a stock separated from the coast, their fisheries should be managed separately by participative cooperation among environmental agencies and local community. Additionally, it indicates that the mtDNA control region can be used in a long-term phylogeographic study of <i>Harengula</i> sp. as samples from other localities are obtained.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"40 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175789","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}
HydrobiologiaPub Date : 2024-08-07DOI: 10.1007/s10750-024-05648-6
Leonardo da Silva Tomadon, Edivando Vitor do Couto, Dayani Bailly, Jóse Hilário Delconte Ferreira, Walter Timo de Vries, Angelo Antonio Agostinho
{"title":"Incorporating aquatic biodiversity into sustainability index for hydrographic sub-basins: a multi-criteria stakeholder assessment approach in the Upper Paraná River","authors":"Leonardo da Silva Tomadon, Edivando Vitor do Couto, Dayani Bailly, Jóse Hilário Delconte Ferreira, Walter Timo de Vries, Angelo Antonio Agostinho","doi":"10.1007/s10750-024-05648-6","DOIUrl":"https://doi.org/10.1007/s10750-024-05648-6","url":null,"abstract":"<p>Sustainable development assessments in hydrographic sub-basins are powerful tools used to guide stakeholders. However, there remains a gap in incorporating new indicators (e.g., biodiversity indicators) into sustainability indexes, which have generally underestimated the environmental dimension. We propose an update to these indexes by incorporating biodiversity data on hydrographic sub-basins. Our goal was to introduce a new ecological sustainability index for hydrographic sub-basins (ESI-sb) that utilizes aquatic ecological indicators. We selected 16 indicators and aggregated them into four sustainability dimensions: economic, social, eco-environmental and negative environmental. We used a multi-criteria analysis based on the analysis hierarchy process (AHP) method to catch stakeholders' importance level of each indicator. The ESI-sb was calculated using the weighted average between the sub-indexes that represent the dimensions. Finally, we applied Gi* statistics to identify the ecological sustainability hotspots and coldspots regions, and the results showed in the Serra do Mar region, the southern region, and the Federal District had high ecological sustainability values; meanwhile, the hydrographic sub-basins that formed the coldspot clusters were located in the western region of the Upper Paraná River basin. The incorporation of aquatic biodiversity data into the index represents an innovation in sustainability indexes recently proposed to hydrographic sub-basins.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"26 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946219","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}