Community structure, succession and invasibility in a seasonal deciduous forest in southern Brazil

Dechoum, Michele de Sá; Castellani, Tânia Tarabini; Zalba, Sergio Martín; Rejmánek, Marcel; Peroni, Nivaldo; Tamashiro, Jorge Yoshio

doi:10.1007/s10530-014-0827-6

Cited by 20 publications

(16 citation statements)

References 86 publications

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“…Something similar occurs with the characteristics of the species that permit to associate them to dispersal vectors, as most of the potentially invasive plants are regionally or even globally shared (Randall 2017). It is also important to recognize that the invasion process is dynamic and that some of the species that are classified as non-invasive at one time could become aggressive invaders if there are changes in the environmental conditions or the invasive population itself (Davis et al 2000, Jiménez et al 2011, Dechoum et al 2014, Schrama and Bardgett 2016, possibly affecting the relative importance of the different vectors under analysis. It is therefore advisable to update the lists of species to be included in the analysis periodically.…”

Section: Discussionmentioning

confidence: 99%

Vector analysis: a tool for preventing the introduction of invasive alien species into protected areas

Brancatelli¹,

Zalba²

2018

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Citation: Brancatelli GIE, Zalba SM (2018) Vector analysis: a tool for preventing the introduction of invasive alien species into protected areas. Nature Conservation 24: 43-63. https://doi. AbstractInvasive alien species are the main agent of biodiversity loss in protected natural areas. Prevention is the most appropriate management tool for addressing this challenge, however, virtually all ongoing management efforts are focused on established populations. Although invasion processes include stochastic components, it is possible to compare the different vectors of introduction that operate in a particular area in terms of their potential to transport species of high risk of invasion efficiently and, once identified, to establish strategies of prevention, early detection and rapid action. This study proposes a system of prioritization of vectors of alien plant dispersal for optimizing the efforts for preventing invasion. The system was developed for the Ernesto Tornquist Provincial Park (province of Buenos Aires, Argentina), but it is directly applicable to other areas. Natural and anthropogenic vectors were evaluated and lists of the species potentially transported by each vector were elaborated according to the characteristics of their propagules. The system analyzes the relative importance of each vector according to: 1) the severity of the potential impact of transportable species, 2) the difficulty of controlling these species, and 3) the volume of transportable propagules. In the case under study, the maximum value of risk corresponds to cargo, followed by vehicles, streams, unintentional human transport, intentional human transport, wind and finally, animals. This analysis can lead to prevention strategies, mapping of dispersal routes and actions of early detection and rapid response.

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Section: Discussionmentioning

confidence: 99%

Vector analysis: a tool for preventing the introduction of invasive alien species into protected areas

Brancatelli¹,

Zalba²

2018

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“…Soil biota such as mycorrhizal fungi and nitrogen‐fixing bacteria play roles in nutrient cycling and plant nutrition and other soil biota (soil‐borne pathogens, herbivores, and parasites) have negative effects that help determine the likelihood of plant invasions (Reinhart and Callaway ) or invasibility (Dechoum et al. , Guo et al. ).…”

Section: Ecosystem Legaciesmentioning

confidence: 99%

Hemiboreal forest: natural disturbances and the importance of ecosystem legacies to management

et al. 2017

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Abstract. The condition of forest ecosystems depends on the temporal and spatial pattern of management interventions and natural disturbances. Remnants of previous conditions persisting after disturbances, or ecosystem legacies, collectively comprise ecosystem memory. Ecosystem memory in turn contributes to resilience and possibilities of ecosystem reorganization following further disturbance. Understanding the role of disturbance and legacies is a prerequisite for maintaining resilience in the face of global change. Several legacy concepts discussed in the peer-reviewed literature, including disturbance, biological, soil, land-use, and silvicultural legacies, overlap in complex ways. Here, we review these established legacy concepts and propose that the new terms "material legacy" (individuals or matter, e.g., survivors, coarse woody debris, nutrients left after disturbance) and "information legacy" (adaptations to historical disturbance regimes) cut across these previous concepts and lead to a new classification of legacies. This includes six categories: material legacies with above-and belowground, and biotic and abiotic categories, and information legacies with above-and belowground categories. These six legacies are influenced by differential patterns of editing and conditioning by "legacy syndromes" that result from natural or human-manipulated disturbance regimes that can be arranged along a gradient of naturalness. This scheme is applied to a case study of hemiboreal forests in the Baltic States of Estonia, Latvia, and Lithuania, where natural disturbance, traditional clearcut silviculture, and afforestation of abandoned agricultural lands constitute the three main legacy syndromes. These legacy syndromes in turn influence forest response to management actions and constrain resilience, leading to a mosaic of natural, manipulated, and artificial (novel) ecosystems across the landscape, depending on how the legacies in each syndrome affect ecological memory.

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“…The exotic and invasive species Hovenia dulcis Thunb. (Rhamnaceae) has a high invasive capacity in native forest remnants (Meyer et al, 2012;Dechoum et al, 2015). Part of the successful establishment of H. dulcis is due to the allelopathic potential of its pseudo-fruits and leaves on seeds germination and seedling growth (Wandscheer et al, 2011) of native species (Ribeiro et al, 2019) and seeds dispersion by zoochory (pseudo-fruits are widely consumed, especially by mammals and birds) (Rocha et al, 2008;Hendges et al, 2012;Lima et al, 2015).…”

mentioning

confidence: 99%

“…Part of the successful establishment of H. dulcis is due to the allelopathic potential of its pseudo-fruits and leaves on seeds germination and seedling growth (Wandscheer et al, 2011) of native species (Ribeiro et al, 2019) and seeds dispersion by zoochory (pseudo-fruits are widely consumed, especially by mammals and birds) (Rocha et al, 2008;Hendges et al, 2012;Lima et al, 2015). The invasion of native forest remnants by H. dulcis, including protected areas and riparian zones in Brazil, has been reported in several studies (Zenni & Ziller, 2011;König et al, 2014;Dechoum et al, 2015;Lazzarin et al, 2015;Padilha et al, 2015). However, knowledge about the effect of H. dulcis on aquatic ecosystems is still scarce.…”

mentioning

confidence: 99%

Plant species invasion effects on litter dynamics in subtropical streams

et al. 2020

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Aim We evaluated the effect of the presence of Hovenia dulcis Thunb. (Rhamnaceae) in riparian zones on the organic matter dynamics of small subtropical streams. Methods We conducted this study in three subtropical Atlantic Forest streams with different densities of H. dulcis in riparian vegetation located in southern Brazil. In each stream, we quantified the input of allochthonous organic matter for one year using buckets (area: 0.04 m2/bucket) suspended about 1 m from the streambed in three different sections (15 buckets/stretch = 45 buckets/stream). Monthly, the plant material retained in the buckets was collected individually, dried (40±5 °C/72 h), identified (native litter together and H. dulcis litter alone) and weighed. Results The largest input of native organic matter occurred during the winter months (~55 g.m-2), ranging from ~31 g.m-2 (summer) to ~46 g.m-2 (spring) over the year. The input of H. dulcis organic matter was concentrated in the autumn (~56 g.m-2) and summer (~28 g.m-2), being scarce in the other seasons (~3 g.m-2 in the spring and winter). Only the contribution of native organic matter was associated with precipitation. Contrary to that observed with native vegetation (input of organic matter related with rainfall), H. dulcis input was related to the phenology of the species, which is deciduous, with leaf fall strongly marked, occurring especially during the autumn. Conclusions When present at high densities (dominant), the presence of H. dulcis in riparian stream vegetation makes the supply of allochthonous plant resources scarce at some periods of the year, altering the energy availability in these ecosystems and, potentially, the functioning of subtropical streams.

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Community structure, succession and invasibility in a seasonal deciduous forest in southern Brazil

Cited by 20 publications

References 86 publications

Vector analysis: a tool for preventing the introduction of invasive alien species into protected areas

Vector analysis: a tool for preventing the introduction of invasive alien species into protected areas

Hemiboreal forest: natural disturbances and the importance of ecosystem legacies to management

Plant species invasion effects on litter dynamics in subtropical streams

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