No abstract

ResumoO presente estudo teve como objetivo inventariar as espécies utilizadas na arborização do campus de Ciências Agrárias (CCA) da Universidade Federal da Paraíba (UFPB), Areia, PB e classiicá-las de acordo com sua origem e seu potencial invasor. Por meio de caminhadas por toda a área de estudo (busca ativa) foram inventariadas todas as espécies utilizadas na arborização local e classiicadas em nativas e exóticas. As exóticas ainda foram classiicadas quanto ao seu potencial invasor. Ao todo foram identiicadas 76 espécies pertencentes a 67 gêneros e 25 famílias. Destas, apenas 26 espécies eram nativas. Os resultados do presente trabalho são preocupantes devido ao elevado número de espécies exóticas utilizadas na arborização do local de estudo (50 spp.) e pela presença de espécies reconhecidamente agressivas, a exemplo de Artocarpus heterophyllus Lam., Azadirachta indica A. Juss. e Leucaena leucocephala (Lam.) de Wit. Palavra-chave: Exóticas invasoras; Paisagismo AbstractUse of exotic species in afforestation and facilitation for the establishment of biological invasion. This study aimed to inventory the species used in landscaping the Campus of Agricultural Sciences of the Federal University of Paraíba, Areia, PB, Brazil and to rank them according to their origin and their invasive potential. Through walks throughout the study area (active search), we cataloged all the species used in local afforestation and classiied them as native or exotic. Exotic plants were also classiied as to their invasive potential. Altogether, we identiied 76 species belonging to 67 genera and 25 families. Of these, only 26 species were native. The results of this study are worrisome because of the large number of exotic species used for planting at the study site (50 species), including known aggressive species: Artocarpus heterophyllus Lam., Azadirachta indica A. Juss. and Leucaena leucocephala (Lam.) de Wit.

In the face of the severe effects caused by biological invasions, this study aimed at evaluating the population structure and impacts caused by the invasive exotic species T. catappa L. over native plant composition, richness and diversity. The study area is located at Atalaia Beach, Aracaju, Sergipe, Northeastern Brazil, and comprises sandbank sites. In order to evaluate the population structure of this invasive exotic species and its impacts on the biota, pertinent statistics were carried out. The results demonstrated that T. catappa shows density of 9,480 ind.ha-1 , being 8,430 ind.ha-1 for non-adults and 1,050 ind.ha-1 for adults, and self-regenerating population. The average species richness for invaded (I) areas and non-invaded (NI) were 6.1 ± 2.42 and 9.7 ± 2.45, respectively. The average abundance of individuals in NI was 1,057.6 ± 432.85 and 184.9 ± 126.66 for I. The diversity and the equability were 2.38 and 0.66 in I and 2.86 and 0.75 in NI, respectively. Thus, T. catappa causes significant impacts on species composition and richness, abundance and autochthonous diversity.

The present study aimed to report the biological invasion by Thespesia populnea of sites under fluviomarine influence and adjacent environments of the Sergipe River, in Aracaju, Sergipe, Northeastern Brazil, by Thespesia populnea, as well as to evaluate the susceptibility of the occurrence of the species in other Brazilian regions. The study site comprises a mangrove area and adjacent sites of the Sergipe river. The focuses of the invasion by T. populnea were obtained by means of walks throughout the extension of the site (active search). To evaluate the susceptibility of occurrence of the species in Brazil, an ecological niche modeling analysis was performed. The invasion of the species was registered at several points in the study area, with the highest concentrations in the most degraded sites. The results of the model analysis demonstrate high to extremely high susceptibility to the occurrence (biological invasion) of the species in several parts of the country. The attributes of the species, observations in situ and results of the modeling analysis suggest the need to control T. populnea in the study area and prohibition of its planting in the Brazilian territory.

Forest landscape restoration (FLR) has a central place in current global debates about the sustainability of natural resources, climate change mitigation and adaptation, livelihoods and biodiversity conservation. FLR approaches support the involvement of different social actors in participatory decision-making processes. We conducted a bibliometric analysis research to provide an overview of scientific publications in forest restoration, FLR and local stakeholders (LS) studies, and, specifically, examine if the studies (1) recognised the relevance of the local level actors and (2) collected primary and/or secondary data on LS using different methods from related publications since 2000. We used the Web of Science (WoS) and Scopus as bibliographic sources. We analysed five main research aspects: (1) publication year, (2) most productive countries according to the total number of publications, (3) most influential journals and cited papers, (4) most influential authors ranked by number of publications, their respective organisations and country collaborations, and (5) a co-occurrence analysis of countries’ collaborations and keywords. We found that forest restoration, FLR and LS studies have been growing over the years, especially in the last decade. However, only 50% (99 records) of the studies recognised the relevance of the local level actors and also collected primary and/or secondary data through different methods. Authors from organisations in North and South America, and Oceania were the ones with the most publications, with only 20% (4 authors) of the top 20 authors having degrees in social sciences. Studies about “ecosystem services”, “ecological restoration”, “natural regeneration”, “livelihoods”, “Bonn challenge” and “governance” have become the main subject of research along the years within the scope of FLR at the local level. Finally, the results showed the gaps that should be considered in future research to improve the involvement and more direct participation of LS, as well as the participation of interdisciplinary and social science researchers in FLR research teams.