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  • Biologie  (64)
  • 1
    In: Biotropica, Wiley, Vol. 55, No. 1 ( 2023-01), p. 40-52
    Kurzfassung: Florestas ripárias têm um papel importante para os ecossistemas de riachos, pois abrigam alta biodiversidade, reduzem a erosão das margens e fornecem matéria orgânica que mantém a biota aquática. No entanto, as florestas ripárias têm sido afetadas por distúrbios antrópicos (incêndios, remoção da vegetação, poluição orgânica), o que altera a composição de espécies e a estrutura física desses habitats. Embora a recuperação da floresta após a remoção da vegetação possa levar décadas, o legado desse distúrbio em processos chave nos ecossistemas ripários tropicais é praticamente desconhecido. Dessa forma, investigamos como processos essenciais para a ciclagem de carbono e nutrientes na floresta e riachos, como o aporte e o estoque de matéria orgânica (folhas, galhos e partes reprodutivas) nos riachos, são influenciados pelo estágio sucessional da vegetação ripária, comparando áreas preservadas com áreas impactadas, onde a vegetação ripária foi removida há 28 anos e estão em processo de sucessão. O aporte de matéria orgânica foi, em geral, semelhante entre as áreas preservadas e impactadas, mas o aporte de galhos foi duas vezes maior nas áreas impactadas do que nas preservadas. Da mesma forma, o aporte de matéria orgânica das margens (aporte lateral) e o estoque no leito do córrego (estoque bentônico) foram 50–60% maiores nas áreas impactadas. A maior quantidade de matéria orgânica observada nas áreas impactadas pode estar relacionada a maior proporção de espécies arbóreas características de estágios sucessionais primários e secundários. Isso inclui a presença de espécies de crescimento rápido e lianas, as quais muitas vezes são mais produtivas e comuns em áreas sob efeito antrópico. Esses resultados evidenciam que o legado do impacto da remoção da vegetação ripária pode alterar o tipo, quantidade e sazonalidade dos aportes e estoque de matéria orgânica em riachos tropicais, mesmo se uma pequena fração da vegetação arbórea for mantida no entorno dos riachos. Esses achados devem ser considerados dentro do contexto da gestão e da conservação de comunidades e processos ecossistêmicos nas interfaces entre florestas e riachos. Palavras‐chave: fluxos de carbono, Cerrado, desmatamento, produtividade vegetal, decomposição de detritos, riqueza de espécies vegetais.
    Materialart: Online-Ressource
    ISSN: 0006-3606 , 1744-7429
    URL: Issue
    RVK:
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2023
    ZDB Id: 2052061-X
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    In: Physiologia Plantarum, Wiley, Vol. 172, No. 2 ( 2021-06), p. 419-430
    Kurzfassung: Sweet potato ( Ipomoea batatas L.), typically cultivated in temperate climates under low inputs, is one of the most important crops worldwide. Abscisic acid (ABA) is an important plant stress‐induced phytohormone. Hitherto, few works analyzed the ABA function in sweet potato tissue growth. Very scarce information is available concerning the ABA role in sweet potato response to water scarcity conditions. Here, we show the ABA content variation in shoots and tubers of eight sweet potato accessions subjected to drought stress. ABA was also related to other resistance traits, such as chlorophyll content index (CCI), carbon isotopic discrimination (Δ 13 C), oxalic acid (OA) and water use efficiency (WUE), to assess stress response mechanisms to water deficit between their organs. The most resilient drought‐stressed sweet potato plants accumulated ABA‐shoot, and significantly decreased the ABA‐tuber content. ABA signaling was related to Δ 13 C and CCI decrease and WUE increment, as an attempt to cope with water stress by partially closing the stomata. The partial closure of stomata could be in part due to the presence of OA‐shoots, known to affect the intensity of the ABA‐shoot signal in stomatal closure. Higher CCI content and minimal Δ 13 C‐shoot differences indicated good carboxylation fractionation, with higher Δ 13 C‐tuber content as an indicator of efficient tuber 13 C fixation and growth. Our work demonstrated that ABA could be used in conjunction with the other traits studied for the assessment of sweet potato whole‐plant responses to environmental stresses, and thus aid the selection of the best drought tolerant genotypes for breeding programs.
    Materialart: Online-Ressource
    ISSN: 0031-9317 , 1399-3054
    URL: Issue
    RVK:
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2021
    ZDB Id: 208872-1
    ZDB Id: 2020837-6
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    Online-Ressource
    Online-Ressource
    Wiley ; 2006
    In:  Acta Zoologica Vol. 87, No. 3 ( 2006-07), p. 203-207
    In: Acta Zoologica, Wiley, Vol. 87, No. 3 ( 2006-07), p. 203-207
    Kurzfassung: This work describes for the first time the ink gland of Aplysia dactylomela Rang, 1828 using light microscopy and histochemical tests. The results reveal that this organ is covered by a layer of simple epithelium and that there are some differences between the epithelium facing the mantle shelf and that facing the mantle cavity. The former consists of columnar cells, which may have a secretory function, whereas the latter is a cuboidal epithelium. Underneath the epithelium and along the whole gland there are fibres of smooth muscle and collagen, organized in groups of parallel bundles. There are vesicles of different diameters, apparently with similar morphology. Some are filled with ink, whereas others are either granular or clear. The ink is released through a duct formed by invaginations of the cuboidal epithelium. Tests with bromophenol blue and periodic acid Schiff indicated that the ink and granulated vesicles contain proteins and carbohydrates or maybe glycoproteins. Between the fibre bundles and the vesicles there are dispersed cells. A diagram is presented emphasizing the covering epithelium, the distribution of muscle and collagen fibres, the dispersed cells, vesicles and ducts. This organization is similar to that of the other Aplysia species studied to date, A . californica .
    Materialart: Online-Ressource
    ISSN: 0001-7272 , 1463-6395
    URL: Issue
    RVK:
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2006
    ZDB Id: 2019873-5
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 4
    In: Ecology, Wiley, Vol. 103, No. 2 ( 2022-02)
    Kurzfassung: Ants, an ecologically successful and numerically dominant group of animals, play key ecological roles as soil engineers, predators, nutrient recyclers, and regulators of plant growth and reproduction in most terrestrial ecosystems. Further, ants are widely used as bioindicators of the ecological impact of land use. We gathered information of ant species in the Atlantic Forest of South America. The ATLANTIC ANTS data set, which is part of the ATLANTIC SERIES data papers, is a compilation of ant records from collections (18,713 records), unpublished data (29,651 records), and published sources (106,910 records; 1,059 references), including papers, theses, dissertations, and book chapters published from 1886 to 2020. In total, the data set contains 153,818 ant records from 7,636 study locations in the Atlantic Forest, representing 10 subfamilies, 99 genera, 1,114 ant species identified with updated taxonomic certainty, and 2,235 morphospecies codes. Our data set reflects the heterogeneity in ant records, which include ants sampled at the beginning of the taxonomic history of myrmecology (the 19th and 20th centuries) and more recent ant surveys designed to address specific questions in ecology and biology. The data set can be used by researchers to develop strategies to deal with different macroecological and region‐wide questions, focusing on assemblages, species occurrences, and distribution patterns. Furthermore, the data can be used to assess the consequences of changes in land use in the Atlantic Forest on different ecological processes. No copyright restrictions apply to the use of this data set, but we request that authors cite this data paper when using these data in publications or teaching events.
    Materialart: Online-Ressource
    ISSN: 0012-9658 , 1939-9170
    URL: Issue
    RVK:
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2022
    ZDB Id: 1797-8
    ZDB Id: 2010140-5
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 5
    In: Ecology, Wiley, Vol. 100, No. 7 ( 2019-07)
    Kurzfassung: Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos, 10 anteaters, and 6 sloths. Our data set includes the families Chlamyphoridae (13), Dasypodidae (7), Myrmecophagidae (3), Bradypodidae (4), and Megalonychidae (2). We have no occurrence data on Dasypus pilosus (Dasypodidae). Regarding Cyclopedidae, until recently, only one species was recognized, but new genetic studies have revealed that the group is represented by seven species. In this data paper, we compiled a total of 42,528 records of 31 species, represented by occurrence and quantitative data, totaling 24,847 unique georeferenced records. The geographic range is from the southern United States, Mexico, and Caribbean countries at the northern portion of the Neotropics, to the austral distribution in Argentina, Paraguay, Chile, and Uruguay. Regarding anteaters, Myrmecophaga tridactyla has the most records ( n  = 5,941), and Cyclopes sp. have the fewest ( n  = 240). The armadillo species with the most data is Dasypus novemcinctus ( n  = 11,588), and the fewest data are recorded for Calyptophractus retusus ( n  = 33). With regard to sloth species, Bradypus variegatus has the most records ( n  = 962), and Bradypus pygmaeus has the fewest ( n  = 12). Our main objective with Neotropical Xenarthrans is to make occurrence and quantitative data available to facilitate more ecological research, particularly if we integrate the xenarthran data with other data sets of Neotropical Series that will become available very soon (i.e., Neotropical Carnivores, Neotropical Invasive Mammals, and Neotropical Hunters and Dogs). Therefore, studies on trophic cascades, hunting pressure, habitat loss, fragmentation effects, species invasion, and climate change effects will be possible with the Neotropical Xenarthrans data set. Please cite this data paper when using its data in publications. We also request that researchers and teachers inform us of how they are using these data.
    Materialart: Online-Ressource
    ISSN: 0012-9658 , 1939-9170
    URL: Issue
    RVK:
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2019
    ZDB Id: 1797-8
    ZDB Id: 2010140-5
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    In: Ecology, Wiley, Vol. 101, No. 11 ( 2020-11)
    Kurzfassung: Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In this data set, we make available occurrence and abundance data on mammal species that (1) transposed a geographical barrier and (2) were voluntarily or involuntarily introduced by humans into the Neotropics. Our data set is composed of 73,738 historical and current georeferenced records on alien mammal species of which around 96% correspond to occurrence data on 77 species belonging to eight orders and 26 families. Data cover 26 continental countries in the Neotropics, ranging from Mexico and its frontier regions (southern Florida and coastal‐central Florida in the southeast United States) to Argentina, Paraguay, Chile, and Uruguay, and the 13 countries of Caribbean islands. Our data set also includes neotropical species (e.g., Callithrix sp., Myocastor coypus , Nasua nasua) considered alien in particular areas of Neotropics. The most numerous species in terms of records are from Bos sp. ( n = 37,782), Sus scrofa ( n = 6,730), and Canis familiaris ( n = 10,084); 17 species were represented by only one record (e.g., S yncerus caffer, Cervus timorensis, Cervus unicolor, Canis latrans ). Primates have the highest number of species in the data set ( n = 20 species), partly because of uncertainties regarding taxonomic identification of the genera Callithrix, which includes the species Callithrix aurita, Callithrix flaviceps, Callithrix geoffroyi, Callithrix jacchus, Callithrix kuhlii, Callithrix penicillata , and their hybrids. This unique data set will be a valuable source of information on invasion risk assessments, biodiversity redistribution and conservation‐related research. There are no copyright restrictions. Please cite this data paper when using the data in publications. We also request that researchers and teachers inform us on how they are using the data.
    Materialart: Online-Ressource
    ISSN: 0012-9658 , 1939-9170
    URL: Issue
    RVK:
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2020
    ZDB Id: 1797-8
    ZDB Id: 2010140-5
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    In: Ecology, Wiley, Vol. 103, No. 6 ( 2022-06)
    Kurzfassung: Mammals are threatened worldwide, with ~26% of all species being included in the IUCN threatened categories. This overall pattern is primarily associated with habitat loss or degradation, and human persecution for terrestrial mammals, and pollution, open net fishing, climate change, and prey depletion for marine mammals. Mammals play a key role in maintaining ecosystems functionality and resilience, and therefore information on their distribution is crucial to delineate and support conservation actions. MAMMALS IN PORTUGAL is a publicly available data set compiling unpublished georeferenced occurrence records of 92 terrestrial, volant, and marine mammals in mainland Portugal and archipelagos of the Azores and Madeira that includes 105,026 data entries between 1873 and 2021 (72% of the data occurring in 2000 and 2021). The methods used to collect the data were: live observations/captures (43%), sign surveys (35%), camera trapping (16%), bioacoustics surveys (4%) and radiotracking, and inquiries that represent less than 1% of the records. The data set includes 13 types of records: (1) burrows | soil mounds | tunnel, (2) capture, (3) colony, (4) dead animal | hair | skulls | jaws, (5) genetic confirmation, (6) inquiries, (7) observation of live animal (8), observation in shelters, (9) photo trapping | video, (10) predators diet | pellets | pine cones/nuts, (11) scat | track | ditch, (12) telemetry and (13) vocalization | echolocation. The spatial uncertainty of most records ranges between 0 and 100 m (76%). Rodentia ( n  =31,573) has the highest number of records followed by Chiroptera ( n  = 18,857), Carnivora ( n  = 18,594), Lagomorpha ( n  = 17,496), Cetartiodactyla ( n  = 11,568) and Eulipotyphla ( n  = 7008). The data set includes records of species classified by the IUCN as threatened (e.g., Oryctolagus cuniculus [ n  = 12,159], Monachus monachus [ n  = 1,512], and Lynx pardinus [ n  = 197]). We believe that th is data set may stimulate the publication of other European countries data sets that would certainly contribute to ecology and conservation‐related research, and therefore assisting on the development of more accurate and tailored conservation management strategies for each species. There are no copyright restrictions; please cite this data paper when the data are used in publications.
    Materialart: Online-Ressource
    ISSN: 0012-9658 , 1939-9170
    URL: Issue
    RVK:
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2022
    ZDB Id: 1797-8
    ZDB Id: 2010140-5
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    In: Ecology, Wiley, Vol. 100, No. 6 ( 2019-06)
    Kurzfassung: Scientists have long been trying to understand why the Neotropical region holds the highest diversity of birds on Earth. Recently, there has been increased interest in morphological variation between and within species, and in how climate, topography, and anthropogenic pressures may explain and affect phenotypic variation. Because morphological data are not always available for many species at the local or regional scale, we are limited in our understanding of intra‐ and interspecies spatial morphological variation. Here, we present the ATLANTIC BIRD TRAITS , a data set that includes measurements of up to 44 morphological traits in 67,197 bird records from 2,790 populations distributed throughout the Atlantic forests of South America. This data set comprises information, compiled over two centuries (1820–2018), for 711 bird species, which represent 80% of all known bird diversity in the Atlantic Forest. Among the most commonly reported traits are sex ( n  = 65,717), age ( n  = 63,852), body mass ( n  = 58,768), flight molt presence ( n  = 44,941), molt presence ( n  = 44,847), body molt presence ( n  = 44,606), tail length ( n  = 43,005), reproductive stage ( n  = 42,588), bill length ( n  = 37,409), body length ( n  = 28,394), right wing length ( n  = 21,950), tarsus length ( n  = 20,342), and wing length ( n  = 18,071). The most frequently recorded species are Chiroxiphia caudata ( n  = 1,837), Turdus albicollis ( n  = 1,658), Trichothraupis melanops ( n  = 1,468), Turdus leucomelas ( n  = 1,436), and Basileuterus culicivorus ( n  = 1,384). The species recorded in the greatest number of sampling localities are Basileuterus culicivorus ( n  = 243), Trichothraupis melanops ( n  = 242), Chiroxiphia caudata ( n  = 210), Platyrinchus mystaceus ( n  = 208), and Turdus rufiventris ( n  = 191). ATLANTIC BIRD TRAITS ( ABT ) is the most comprehensive data set on measurements of bird morphological traits found in a biodiversity hotspot; it provides data for basic and applied research at multiple scales, from individual to community, and from the local to the macroecological perspectives. No copyright or proprietary restrictions are associated with the use of this data set. Please cite this data paper when the data are used in publications or teaching and educational activities.
    Materialart: Online-Ressource
    ISSN: 0012-9658 , 1939-9170
    URL: Issue
    RVK:
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2019
    ZDB Id: 1797-8
    ZDB Id: 2010140-5
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 9
    In: Nature, Springer Science and Business Media LLC, Vol. 617, No. 7962 ( 2023-05-25), p. 764-768
    Kurzfassung: Critical illness in COVID-19 is an extreme and clinically homogeneous disease phenotype that we have previously shown 1 to be highly efficient for discovery of genetic associations 2 . Despite the advanced stage of illness at presentation, we have shown that host genetics in patients who are critically ill with COVID-19 can identify immunomodulatory therapies with strong beneficial effects in this group 3 . Here we analyse 24,202 cases of COVID-19 with critical illness comprising a combination of microarray genotype and whole-genome sequencing data from cases of critical illness in the international GenOMICC (11,440 cases) study, combined with other studies recruiting hospitalized patients with a strong focus on severe and critical disease: ISARIC4C (676 cases) and the SCOURGE consortium (5,934 cases). To put these results in the context of existing work, we conduct a meta-analysis of the new GenOMICC genome-wide association study (GWAS) results with previously published data. We find 49 genome-wide significant associations, of which 16 have not been reported previously. To investigate the therapeutic implications of these findings, we infer the structural consequences of protein-coding variants, and combine our GWAS results with gene expression data using a monocyte transcriptome-wide association study (TWAS) model, as well as gene and protein expression using Mendelian randomization. We identify potentially druggable targets in multiple systems, including inflammatory signalling ( JAK1 ), monocyte–macrophage activation and endothelial permeability ( PDE4A ), immunometabolism ( SLC2A5 and AK5 ), and host factors required for viral entry and replication ( TMPRSS2 and RAB2A ).
    Materialart: Online-Ressource
    ISSN: 0028-0836 , 1476-4687
    RVK:
    RVK:
    RVK:
    Sprache: Englisch
    Verlag: Springer Science and Business Media LLC
    Publikationsdatum: 2023
    ZDB Id: 120714-3
    ZDB Id: 1413423-8
    SSG: 11
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    In: Nature, Springer Science and Business Media LLC, Vol. 619, No. 7971 ( 2023-07-27), p. E61-E61
    Materialart: Online-Ressource
    ISSN: 0028-0836 , 1476-4687
    RVK:
    RVK:
    RVK:
    Sprache: Englisch
    Verlag: Springer Science and Business Media LLC
    Publikationsdatum: 2023
    ZDB Id: 120714-3
    ZDB Id: 1413423-8
    SSG: 11
    Standort Signatur Einschränkungen Verfügbarkeit
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