Can the Persistent Seed Bank Contribute to the Passive Restoration of Urban Forest Fragments After Invasive Species Removal?

2017 ◽  
Vol 35 (2) ◽  
pp. 156-166 ◽  
Author(s):  
Hannah Clements ◽  
Paulette Bierzychudek
2018 ◽  
Vol 31 (4) ◽  
pp. e12190 ◽  
Author(s):  
Christopher M. Baker ◽  
Fasma Diele ◽  
Carmela Marangi ◽  
Angela Martiradonna ◽  
Stefania Ragni

2010 ◽  
Vol 36 (1) ◽  
pp. 18-27
Author(s):  
Robert Muller ◽  
Carol Bornstein

Policies to promote urban forest diversity were assessed in 49 California, U.S. municipalities through a short questionnaire, followed by evaluation of street tree inventories and approved planting lists. While the majority of respondents (82%) indicated maintaining species diversity was an objective in managing their municipal forest, fewer than half of those responding positively (48%) had codified the objective in an actual urban forest management plan. Protecting against invasive species was an objective for a minority of communities (24%). Street tree inventories, provided by 18 respondents, indicated a high existing diversity within the communities of the state of California (avg. 185 species per community; range 95–408). In communities where both inventories and approved planting lists could be compared directly, the number of approved species for future planting was 29% of the number of species in the existing inventory. This suggests that the future diversity of California’s urban forests may be at risk. In order to improve diversity of their municipal forests, it is suggested communities retain an experimental approach to evaluating new species, build productive collaborations with all stakeholders as well as other communities, and develop outreach opportunities to enhance public awareness of the multiple values of a diverse urban forest.


2011 ◽  
Vol 99 (2) ◽  
pp. 178-185 ◽  
Author(s):  
Daniella Vinha ◽  
Luciana F. Alves ◽  
Lilian B.P. Zaidan ◽  
Maria T. Grombone-Guaratini

2021 ◽  
Author(s):  
Chris Parker

Abstract M. diplotricha (syn. M. invisa) is a small, often scrambling, neotropical shrub that has invaded many countries in the old tropics and many oceanic islands. In recent decades it has spread to new regions and has the potential to invade more tropical areas. It forms impenetrable spiny thickets that invade highly disturbed sites, but agricultural systems in particular. The shrub produces large quantities of seeds at an early age and has a persistent seed bank. It is extremely difficult to control effectively using mechanical or chemical means, however, biological control programmes have had a large degree of success.


2020 ◽  
pp. 1-7
Author(s):  
Robert R. McGregor ◽  
Henri Goulet ◽  
James R. LaBonte

Abstract The first western Canadian records of the European carabid, Nebria brevicollis (Fabricius) (Coleoptera: Carabidae), are reported from Vancouver, Coquitlam, and Delta, British Columbia, Canada. A species description is provided to facilitate identification of this new invasive species. In addition, pitfall trap data are presented that demonstrate establishment of populations at four locations in Coquitlam. Trap catches were substantially higher at one anthropogenic meadow site than at three urban forest sites. Potential for further expansion of the range of N. brevicollis in British Columbia and beyond is discussed.


Seeds ◽  
2014 ◽  
pp. 187-276 ◽  
Author(s):  
Carol C. Baskin ◽  
Jerry M. Baskin

Seeds ◽  
1998 ◽  
pp. 133-179 ◽  
Author(s):  
Carol C. Baskin ◽  
Jerry M. Baskin

Author(s):  
Wesley Arruda Gimenes Nantes ◽  
Filipe Martins Santos ◽  
Gabriel Carvalho de Macedo ◽  
Wanessa Texeira Gomes Barreto ◽  
Luiz Ricardo Gonçalves ◽  
...  

FLORESTA ◽  
2015 ◽  
Vol 45 (3) ◽  
pp. 535 ◽  
Author(s):  
Raphaela Vilela Eiras e Paiva ◽  
José Hugo Campos Ribeiro ◽  
Fabricio Alvim Carvalho

Este estudo visou avaliar a composição florística, a fitossociologia e a diversidade de espécies do estrato regenerante arbóreo de um pequeno fragmento (0,5 ha) de Floresta Estacional Semidecidual, após 10 anos de abandono, no perímetro urbano do município de Juiz de Fora, MG, Brasil. Os indivíduos da regeneração arbórea (altura ≥ 1 m e DAP < 5 cm) foram amostrados em 25 parcelas aleatórias de 5 x 5 m. Foram amostrados 1224 indivíduos pertencentes a 40 espécies. Houve uma forte predominância (> 90%) de espécies de estágios sucessionais iniciais (pioneiras e secundárias iniciais). Como reflexo da forte dominância ecológica observada, exercida principalmente pela elevada densidade das espécies Dalbergia nigra e Siparuna guianensis, o valor do índice de diversidade de espécies de Shannon (H’ = 2,38) foi muito inferior aos valores encontrados para fragmentos florestais maduros. Mesmo sendo um fragmento pequeno, isolado e em estágio inicial de sucessão secundária, análises multivariadas (agrupamento e DCA) evidenciaram a formação de grupos florísticos e uma forte diferenciação no arranjo das espécies, evidenciando a heterogeneidade típica de florestas tropicais. Embora apresente uma baixa diversidade, esse fragmento urbano tem funções ecológicas e sociais importantes para a região, que carece de áreas verdes para a conservação da flora nativa.AbstractStructure, diversity and heterogeneity of regeneration stratum in an urban forest fragment after 10 years of forest succession. This research aimed to evaluate the floristic composition, phytosociology and species diversity of the regenerating woody stratum of a small fragment (0.5 ha) of Semideciduous Forest, after 10 years of abandonment, in the municipality of Juiz de Fora, MG, Brazil. All woody individuals (height ≥ 1 m dbh <5 cm) were sampled at 25 random plots of 5 x 5 m. We sampled 1224 individuals belonging to 40 species. There was a strong predominance (> 90%) of species of early successional stages (pioneer and early secondary). Reflecting the strong observed ecological dominance, exercised primarily by the high density of the species Dalbergia nigra and Siparuna guianensis, species diversity value (Shannon index H '= 2.38) was much lower than the values found for mature forest fragments in this region. Although a small fragment, isolated and in early stages of secondary succession, the multivariate analysis (cluster and DCA) revealed the formation of distinct floristic groups and a strong differentiation in the arrangement of the species, showing the tropical forests typical heterogeneity. Although it has a low diversity, this urban fragment has ecological and social importance to the region, that present lack of green areas to conserve the native flora.Keywords:  Phytosociology; multivariate analysis; gradient analysis; ecological groups.


1993 ◽  
Vol 64 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Jaqueline J.S. Rodrigues ◽  
Keith S. Brown ◽  
Alexandre Ruszczyk

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