scholarly journals Effects of temporal variation in community-level fruit abundance on seed dispersal by birds across woody species

2018 ◽  
Vol 105 (11) ◽  
pp. 1792-1801 ◽  
Author(s):  
Shoji Naoe ◽  
Takashi Masaki ◽  
Shoko Sakai
Keyword(s):  
Seed Dispersal ◽  
Temporal Variation ◽  
Woody Species ◽  
Community Level ◽  
Fruit Abundance

Seed dispersal interactions promoting plant invasions.

2020 ◽  
pp. 90-104
Author(s):  
M. Celeste Díaz Vélez ◽  
Ana E. Ferreras ◽  
Valeria Paiaro
Keyword(s):  
Seed Germination ◽  
Seed Dispersal ◽  
Seedling Establishment ◽  
Native Species ◽  
Native Plants ◽  
Woody Species ◽  
Native Plant ◽  
Invasional Meltdown ◽  
Native Plant Species ◽  
Origin Life

Abstract Animal dispersers are essential for many non-native plants since they facilitate seed movement and might promote seed germination and seedling establishment, thereby increasing their chances of invasion. This chapter reviews the published literature on seed dispersal of non-native plant species by native and/or non-native animals. The following questions are addressed: (i) Are interactions between non-native plants and their animal dispersers evenly studied worldwide? (ii) Which are the distinctive traits (i.e. geographical origin, life form, dispersal strategy and propagule traits) of non-native plants that are dispersed by animals? (iii) Which are the most studied groups of dispersers of non-native plants around the world? (iv) Does the literature provide evidence for the Invasional Meltdown Hypothesis (non-native plant-non-native disperser facilitation)? (v) What is the role of animal dispersers at different stages of the non-native plant regeneration process? Our dataset of 204 articles indicates that geographical distribution of the studies was highly heterogeneous among continents, with the highest number coming from North America and the lowest from Asia and Central America. Most of the non-native plants involved in dispersal studies were woody species from Asia with fleshy fruits dispersed by endozoochory. More than the half of the animal dispersal agents noted were birds, followed by mammals, ants and reptiles. The dominance of bird-dispersal interactions over other animal groups was consistent across geographical regions. Although most of the studies involved only native dispersers, interactions among non-native species were detected, providing support for the existence of invasional meltdown processes. Of the total number of reviewed articles reporting seed removal, 74% evaluated seed dispersal, but only a few studies included seed germination (35.3%), seedling establishment (5.4%) or seed predation (23.5%). Finally, we discuss some research biases and directions for future studies in the area.

Fruit resource tracking by hornbill species at multiple scales in a tropical forest in India

2015 ◽  
Vol 31 (6) ◽  
pp. 477-490 ◽  
Author(s):  
Rohit Naniwadekar ◽  
Charudutt Mishra ◽  
Aparajita Datta
Keyword(s):  
Seed Dispersal ◽  
Multiple Scales ◽  
Positive Association ◽  
Eastern Himalaya ◽  
Resource Tracking ◽  
Ripe Fruit ◽  
Intermediate Scale ◽  
Fruit Availability ◽  
Fruit Abundance ◽  
The Relationship

Abstract:The fruit-tracking hypothesis predicts a positive association between frugivores and fruit abundance over space and time. We documented hornbill diets and examined the relationship between fruit abundance and abundance of three hornbill species (Buceros bicornis, Rhyticeros undulatus and Aceros nipalensis) in the Eastern Himalaya from 2009–2012. The study was carried out at three scales: at the largest scale of the study area (15 km2), at the intermediate scale – eight 3-ha patches within the study area and at the smallest scale of individual fruiting trees. Ninety-one per cent of the 64 foraging sightings of the great hornbill were on figs while more than 50% of the foraging sightings of the wreathed (83) and rufous-necked hornbills (87) were on non-fig fruits. At the largest scale, wreathed hornbill abundance and ripe fruit abundance peaked in the non-breeding season. At the intermediate scale, wreathed hornbill abundance was positively associated with non-fig fruit availability while rufous-necked hornbill abundance was negatively associated with non-fig fruit availability. At the smallest scale, great and rufous-necked hornbill abundances were correlated with fig and non-fig fruit crop sizes, respectively. The three hornbill species track fruit availability at different scales based on diet, which has implications for their role in seed dispersal.

Community-level flowering phenology and fruit set: Comparative study of 25 woody species in a secondary forest in Japan

2003 ◽  
Vol 18 (6) ◽  
pp. 711-723 ◽  
Author(s):  
Noriyuki Osada ◽  
Shinji Sugiura ◽  
Koji Kawamura ◽  
Michiko Cho ◽  
Hiroshi Takeda
Keyword(s):  
Comparative Study ◽  
Fruit Set ◽  
Secondary Forest ◽  
Woody Species ◽  
Flowering Phenology ◽  
Community Level

Pollination and seed dispersal modes of woody species of 12-year-old secondary forest in the Atlantic Forest region of Pernambuco, NE Brazil

Flora ◽  
2010 ◽  
Vol 205 (8) ◽  
pp. 540-547 ◽  
Author(s):  
Thomas M. Kimmel ◽  
Ladivania M. do Nascimento ◽  
Daniel Piechowski ◽  
Everardo V.S.B. Sampaio ◽  
Maria J. Nogueira Rodal ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Atlantic Forest ◽  
Secondary Forest ◽  
Woody Species ◽  
Forest Region

scholarly journals The non-native woody species of the flora of Ukraine: Introduction, naturalization and invasion

2019 ◽  
Vol 27 (3) ◽  
pp. 276-290 ◽  
Author(s):  
R. I. Burda ◽  
S. N. Koniakin
Keyword(s):  
Invasive Species ◽  
Seed Dispersal ◽  
Alien Species ◽  
Robinia Pseudoacacia ◽  
Woody Species ◽  
Plant Invasions ◽  
Ailanthus Altissima ◽  
Native Plant ◽  
Acer Negundo ◽  
Native Woody Species

The process of invasion, naturalization, dispersion and invasive activity of non-native woody species in 5 regional floras, 5 urban floras and over 30 floras of the protected areas is discussed. It has been established that 182 non-native species out of 95 genera and 45 families are currently at different naturalization stages in the spontaneous flora of Ukraine. In terms of life-forms, they may be divided as follows: trees – 41%, shrubs – 35%, trees/shrubs – 15%, lianas – 9%. Most species spread both via seed dispersal and the vegetative way – 56%, using only seed dispersal – 42%, only the vegetative way – 2%. According to the preliminary rating of species-wise invasive activity, 71 species (40%) have naturalized completely, among them 20 invasive species, including 12 transformer species, 29 potentially invasive species, and 22 naturalized species which demonstrate no invasive tendencies. The initial stages of invasion of 111 species are as follows: introduction – 9%, survival – 36%, adaptation of the reproductive sphere – 28%, establishment, formative of local populations – 27%. In terms of dispersion, non-naturalized species are divided as follows: rare – 45%, local – 16%, sporadic – 6%, unique – 12%, spreading under control beyond collections and expositions in botanical gardens and arboretums – 21%. Twelve transformer species, the greatest threat to local diversity, are Acer negundo, Ailanthus altissima, Amorpha fruticosa, Bupleurum fruticosum, Elaeagnus angustifolia, E. rhamnoides, Fraxinus ornus, Parthenocissus quinquefolia, P. vitacea, Robinia pseudoacacia, Rhamnus alaternus, Salix × blanda and 8 invasive proper species: Berberis aquifolia, Colutea orientalis, Daphne laureola, Prunus cerasifera, P. serotina, Quercus ilex, Viburnum tinus, Vitis vinifera. The list of alien species, most widespread in 50 regions of Europe, includes Robinia pseudoacacia (42 regions), Ailanthus altissima (40), Acer negundo (38), Prunus cerasus (34), Quercus rubra (34), Rosa rugosa (34), Prunus domestica (31). The mitigation of the impacts of these species on local biodiversity is possible via the restoration of local native plant communities, land use organization, strict selection of introduced species prior to the introduction, culture of planting management, preventive measures and extending awareness and sharing of information about plant invasions. Therefore, Ukraine’s spontaneous flora is notable for the active process of naturalization of non-native woody species with considerable involvement of invasive alien species. This is the first and preliminary evaluation of the invasive activity of woody species in Ukraine’s flora. The manifestations of the global tendency of increased involvement and invasive activity of alien woody species in domestic flora have been confirmed. These conclusions are also relevant for elaborating the system of preventive, containing and mitigating measures regarding plant invasions in Ukraine.

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