Oecologia Australis最新文献

{"title":"MICROALGAS E CIANOBACTÉRIAS CONTINENTAIS NO ESTADO DO ESPÍRITO SANTO: PASSADO, PRESENTE E FUTURO","authors":"V. Fernandes, Danilo Camargo-Santos, Stéfano Zorzal-Almeida","doi":"10.4257/oeco.2022.2602.10","DOIUrl":"https://doi.org/10.4257/oeco.2022.2602.10","url":null,"abstract":"O estado do Espírito Santo (Brasil) tem sido pouco explorado em termos de microalgas e cianobactérias de ambientes aquáticos continentais, apesar de possuir doze bacias hidrográficas, tendo a maior contribuição, em termos de volume de água da bacia do rio Doce. Este fato é resultado do baixo número de pesquisadores e instituições com pesquisas ecológicas e taxômicas. As primeiras investigações limnológicas com microalgas e cianobactérias ocorreram na década de 90, tendo avanço considerável em lagoas costeiras, lagos, rios e represas a partir da década de 2000, tanto com fitoplanctôn quanto com o perifíton, devido ao incremento de pesquisadores e editais de pesquisa. Este estudo cienciométrico visou identificar tendências das pesquisas já realizadas, apontando os ecossistemas aquáticos mais estudados e os autores dos artigos. Os resultados evidenciaram que a maioria dos estudos se concentrou na ecologia das comunidades, com listas de táxons; raros foram os estudos taxonômicos; poucos foram os trabalhos experimentais para compreensão de fatores reguladores das comunidades. Inúmeras lacunas precisam ser preenchidas, especialmente no que tange ao: levantamento da biodiversidade nas diferentes regiões do estado, com ênfase em taxonomia; desenvolvimento de pesquisas experimentais para compreensão de fatores reguladores das comunidades; estudos preditivos frente a impactos ambientais; uso destas comunidades como bioindicadores de impactos ambientais; estudos biotecnológicos com microalgas; pesquisas que abordem impactos na saúde pública relacionados, principalmente, com as florações de cianobactérias potencialmente tóxicas; realização de testes de hipóteses ecológicas. Há também a necessidade e relevância de publicações em revistas internacionais de maior impacto e com colaboradores nacionais e internacionais e o estabelecimento de parcerias com instituições externas ao Espírito Santo e ao Brasil. Os novos direcionamentos favorecerão o incremento do conhecimento das comunidades fitoplanctônica e perifítica nos ecossistemas aquáticos continentais do Espírito Santo e fornecerão subsídios para a tomada de medidas de recuperação e/ou preservação. CONTINENTAL MICROALGAE AND CYANOBACTERIA IN ESPÍRITO SANTO STATE: PAST, PRESENT AND FUTURE: The Espírito Santo State (Brazil) has been little explored in terms of microalgae and cyanobacteria from inland waters, despite its twelve hydrographic basins and being the greatest contribution in water volume of the Doce river basin. This fact is the result of the low number of researchers and institutions with research lines about freshwater ecology and microalgae taxonomy. Literature records indicate that the early limnological researches that studied microalgae were published in the 1990s, with a considerable increase in studies in coastal lagoons, lakes, rivers, and dams from the 2000s onwards, about phytoplankton and periphyton, due to the increase in the number of researchers and more research notices. The present sc","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":"211 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41253210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A LITTLE ABOUT THE SCIENCE OF THE INLAND WATERS IN THE NORTHERN OF RIO DE JANEIRO STATE: CYANOBACTERIAL BLOOMS IN THE LOWER PARAÍBA DO SUL RIVER","authors":"M. Suzuki","doi":"10.4257/oeco.2022.2602.23","DOIUrl":"https://doi.org/10.4257/oeco.2022.2602.23","url":null,"abstract":"The 1993 inauguration of UENF (Universidade Estadual do Norte Fluminense Darcy Ribeiro) has made research on aquatic ecosystems in the northern region of Rio de Janeiro State a reality, most notably that pertaining to the lower Paraíba do Sul River (PSR) and associated ecosystems (e.g. mangroves, coastal lagoons and coastal zone). These researches were, in part, leveraged by the scientific training provided by Dr Francisco Esteves. Within the municipality of Campos dos Goytacazes, the PSR has been monitored with biweekly samplings since 1994 by UENF in a long-term project highlighting the river’s role in supplying water for 90% of the municipality’s population. However, potamological conditions such as low outflow and eutrophication have fostered episodic cyanobacterial blooms, especially during the dry season. One such event caused water supply interruptions in the municipalities located in the lower PSR basin, a fact that highlights the importance of pluriannual monitoring of its hydrochemical conditions.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49492965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PHYTOPLANKTON BIOMASS INCREASES IN A SILT-IMPACTED AREA IN AN AMAZONIAN FLOOD-PLAIN LAKE OVER 15 YEARS","authors":"V. Huszar, Caio Graco-Roza, J. Nabout, Patrícia Nunes, E. Ribeiro, S. Melo, S. Cardoso, Uanderson J. Pereira, Marcos Paulo Figueiredo Barros, R. Bozelli, F. Roland, L. Silva, F. Esteves","doi":"10.4257/oeco.2022.2602.09","DOIUrl":"https://doi.org/10.4257/oeco.2022.2602.09","url":null,"abstract":"Tailings from bauxite mining in Porto Trombetas (Pará state, Central Amazonia, Brazil) was discharged (1979–1989) into Batata Lake affecting about 30% of its area. The lake belongs to a clear-water flood-plain system along the Trombetas River, a tributary of the Amazon River. Siltation is the main perceived factor impacting aquatic and flooded communities. Besides natural regeneration, a program to restore a section of igapó forest in the impacted area (IA) has been conducted since 1991. Decreased light is the main factor reducing total phytoplankton biomass (PhyBM) in IA. We hypothesized that PhyBM in IA increases over time because of the improvement of the underwater light conditions due to the natural regeneration and restoration. We sampled quarterly PhyBM and limnological variables (depth, transparency, temperature, pH, conductivity, dissolved oxygen, turbidity, suspended solids, total Kjeldahl nitrogen, and total phosphorus), over 15 years (2005–2019) at eight sampling sites in the two areas (N = 349). We also obtained daily climatic and hydrologic data. PhyBM was higher in NIA than in IA. The temporal trend in the annual mean of PhyBM increased significantly over time only in the IA, approximating the NIA values, confirming our general hypothesis. The increase of PhyBM in the IA was negatively related to the residual light attenuation caused by non-phytoplankton turbidity and to total phosphorus, and positively to air temperature and site depth (p < 0.05; Marginal r2 = 0.18; Conditional r2 = 0.29). Instead, in NIA, PhyBM was explained only by the increase in air temperature (p < 0.05; Marginal r2 = 0.15; Conditional r2 = 0.34). We concluded that the PhyBM in the IA positively responds to the synergy between increasing light availability, air temperature, and site depth, and decreasing total phosphorus concentrations, regardless of hydrologic phase.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47055654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE ROLE OF HABITAT COUPLING BY ZOOPLANKTON DRIVING POPULATION DYNAMICS AND STABILITY IN SHALLOW LAKES","authors":"Gilberto Muniz-Junior, B. R. Figueiredo, A. Gripp, Adriano Caliman, L. Carneiro, R. D. Guariento","doi":"10.4257/oeco.2022.2602.11","DOIUrl":"https://doi.org/10.4257/oeco.2022.2602.11","url":null,"abstract":"Studies of population stability in shallow lakes are yet to explain how fishless ponds, with high algae productivity, can have stable zooplankton-algae populations throughout the year. These studies have traditionally overlooked the role of benthic-pelagic coupling, a phenomenon that has noticeable effects on population stability in aquatic environments. We analyzed a simple model to show that benthic-pelagic habitat coupling can explain discrepancies between the behavior of classical predator-prey models and the patterns observed in natural aquatic systems. We used a Lotka-Volterra type model of zooplankton and algae, explicitly modeled as phytoplankton and periphyton. Zooplankton could eat in both algal compartments, presenting a multi-chain omnivore configuration, whereas phytoplankton and periphyton engage in exploitative competition as system support capacity increases. We also modeled the algal exchange among compartments. Our model results show that (1) zooplankton—algae systems tend to be stable up to high nutrient values at intermediate degrees of omnivory, that (2) algae exchange among compartments may dampen stability and that (3) exploratory competition between phytoplankton and the periphyton can also decrease stability. The model results are supported by empirical results available in the literature. Despite the limitations of the modeling approach, our results emphasize the role of habitat coupling and contribute to deepening the understanding of the processes and mechanisms capable of promoting the stability of population dynamics in shallow lakes","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48472550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PREDATORY EFFECT AND SELECTIVITY OF PREY OF NOTONECTA PERUVIANA (HEMIPTERA: NOTONECTIDAE) ON THE LARVAL CONTROL OF MOSQUITOES (DIPTERA: CULICIDAE)","authors":"Y. Ayala-Sulca, Reynán Cóndor-Alarcón, Percy Colos-Galindo, Jorge Arenas-Terrel, Carlos Huayhua-Lobatón, Antonio Jeri-Chávez, Carlos Carrasco-Badajoz, J. Iannacone","doi":"10.4257/oeco.2022.2601.04","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.04","url":null,"abstract":"The larval stage of culicid mosquitoes are the main food resource of notonectides in aquatic systems. Prey alternation and abundance can significantly affect predator-prey interaction and functional response (FR). We evaluated the effect of predation and prey selectivity of Notonecta peruviana in fourth-stage larvae (F1) of Aedes aegypti and Culex quinquefasciatus at different densities and two test systems: one prey and the combination of both (ratio 1: 1). We used the FR protocol to measure predation and the Manly preference index () to evaluate the selectivity of prey, in a CRD experimental design. N. peruviana generated type II RF (“concave model”) of greater impact in larvae of Ae. aegypti (p ≤ 0.01). Predation capacity was similar in both of the prey, 17 ± 4 larvae / day in Cx. quinquefasciatus and 21 ± 4 in Ae. aegypti. The attack coefficient (a), turned out to be similar for both prey species in both test systems and the handling time (Th) was lower for Ae. aegypti than for Culex. Notonecta peruviana demonstrated selectivity for larvae of Ae. aegypti especially at the highest densities (≥ 0.5), attributed to the inefficient anti depredation response, active mobility and smaller size compared to those of Cx. quinquefasciatus. The FR demonstrated the success of N. peruviana in the larval control of culicid mosquitoes, prioritizing the type of prey; thus, promoting the need for its applicability in the field.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42258541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MEDIUM TO LARGE SIZED MAMMALS IN VÁRZEAS DO RIO IVINHEMA STATE PARK, MATO GROSSO DO SUL, CENTRAL-WESTERN BRAZIL","authors":"I. Aximoff, R. Oliveira, Dione Sales, A. C. Freitas","doi":"10.4257/oeco.2022.2601.10","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.10","url":null,"abstract":"Habitat degradation and alien species are among the greatest threats to mammals. The degradation of the Atlantic Forest remnants makes it essential to carry out mammal inventories. In this sense, the species richness and the relative frequency of medium and large mammals was evaluated based on active search (192 hours) and camera traps (345 trap-nights). The study was conducted from July 2019 to June 2020, in the Várzeas do Rio Ivinhema State Park - VRISP, Mato Grosso do Sul State - MS. A total of 30 native species were found, representing 62% of mammals in MS, in addition to three invasive alien species. Our survey added sixteen new occurrences to the VRISP. The occurrence of Leopardus braccatus is the first record for the Atlantic Forest biome. Our study contributes to conservation measures proposed by VRISP, which plays a fundamental role in wildlife conservation in the Rio Paraná biodiversity corridor.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42685667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AVIFAUNA IN TWO REMNANTS OF BREJOS DE ALTITUDE IN THE STATE OF PERNAMBUCO, BRAZIL","authors":"Williams Oliveira-Silva, Arthur Siqueira de Paula, Hugo Fernando de Lima, Matheus Galindo Jácome de Carvalho, Renato Gaban-Lima, R. M. D. Lyra-Neves, W. R. Telino-Junior","doi":"10.4257/oeco.2022.2601.05","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.05","url":null,"abstract":"The Brejos de Altitude are enclaves of high-altitude Atlantic Forest surrounded by the Caatinga, presenting high species richness and endemism. Therefore, this study aimed to characterize the avifauna in forest remnants of the Brejos de Altitude in the state of Pernambuco: the Vale do Tabocas Farm and the RPPN Reserva Natural Brejo. Using mist-nets captures and direct observations, we recorded 211 species of birds, including 28% forest-dependent species. Four taxa endemic to the Pernambuco Center, two to the Atlantic Forest, six to the Caatinga, and 14 to the northeastern region were recorded. Eight threatened taxa were also recorded. Insectivores (44%) and omnivores (25%) were the most representative trophic guilds. Although the Vale do Tabocas fragment presented the lowest species richness, it holds more endangered and endemic species. These results indicate the importance of these forest fragments for local bird diversity maintenance and their conservation must be encouraged.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47793425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ABUNDANCE AND REPRODUCTION OF OLIGORYZOMYS NIGRIPES IN TWO FOREST FRAGMENTS, SOUTHERN OF ATLANTIC FOREST, CERRO LARGO, RS","authors":"D. O. Lima, Jady de Oliveira Sausen, Fabrício Luiz Skupien, D. Rodrigues","doi":"10.4257/oeco.2022.2601.11","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.11","url":null,"abstract":"Oligoryzomys nigripes is a generalist rodent widely distributed in South America. The present study aims to present information on abundance, reproduction, and litter size for O. nigripes in the south of Atlantic Forest biome. This study was conducted at two forest fragments in Cerro Largo, RS, between April 2015 and October 2016, with 5,320 trap-nights. We captured most of the individuals captured during winter and spring, corroborating previous researches that indicated higher abundance during the coldest months on the southern portion of O. nigripes distribution. Reproductive animals were found during all seasons, however, males had greater chances to be reproductive during spring. During autumn of 2015, through handling and identification, one reproductive female had three young; this was a rare record of litter size for a Neotropical rodent.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47603173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MEDIUM- AND LARGE-SIZED WILD MAMMALS OF THE RESERVA BIOLÓGICA MUNICIPAL MORENO FORTES, DOIS IRMÃOS DAS MISSÕES, RIO GRANDE DO SUL STATE, BRAZIL","authors":"Fábio André Facco Jacomassa","doi":"10.4257/oeco.2022.2601.09","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.09","url":null,"abstract":"Medium- and large-sized wild mammals (MLSWM) are little known in protected areas. I carried a survey of MLSWM at the Reserva Biológica Municipal Moreno Fortes (REBIO-MF) in Dois Irmãos das Missões, Rio Grande do Sul state (RS), Brazil, using active search, footprint traps and interviews with residents. This work provided a list of 26 species of MLSWM. This number represent 60% of MLSWM species of Rio Grande do Sul state and 70% of those found in the region. Among them, 54% are included in the list fauna of endangered species at the state level, 19% at the national level, and 23% globally. The Crab-eating Fox (Cerdocyon thous) was the most registered and common species. The interviewees reported 24 species, 12 of which were not registered using active search and footprint traps methods. Such informations indicates REBIO-MF as an important place for MLSWM at RS.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42900288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MEDIUM AND LARGE SIZED MAMMALS IN FRAGMENT AT CERRADO, MINAS GERAIS, BRAZIL","authors":"I. Aximoff, Antônio Marcos dos Santos, Karen Santos Toledo, A. C. Freitas, Heloisa Carneiro da Rocha Guillobel","doi":"10.4257/oeco.2022.2601.08","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.08","url":null,"abstract":"The state of Minas Gerais has already lost more than half of the original Cerrado coverage. Mammals are among the beings most affected by this. Fauna inventories are essential for future conservation actions. In this sense, between July 2018 and December 2020, the richness and composition of medium and large mammals in a Cerrado fragment in the central-west of Minas Gerais were evaluated, using direct visualization methods (464 hours of searches) and camera traps (380 night traps). Were recorded 28 wild species, including seven threatened species, two of which are globally threatened. Carnivora was the most representative order (12 species), followed by Cingulata and Primates (4 each). The richness found was superior to other fragments and similar to nearby protected areas a dozen times larger. The fragment and the high species richness studied, including endangered species and large predators, suffer anthropic pressure, requiring short-term measures for their conservation","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43737817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}