Co-occurrence pattern of congeneric tree species provides conflicting evidence for competition relatedness hypothesis

In plants, negative reproductive interaction among closely related species (i.e., reproductive interference) is known to hamper the coexistence of congeneric species while facilitation can increase species persistence. Since reproductive interference in plants may occur through interspecific pollination, the effective range of reproductive interference may reflects the spatial range of interspecific pollination. Therefore, we hypothesized that the coexistence of congeners on a small spatial scale would be less likely to occur by chance but that such coexistence would be likely to occur on a scale larger than interspecific pollination frequently occur. In the present study, we tested this hypothesis using spatially explicit woody plant survey data. Contrary to our prediction, congeneric tree species often coexisted at the finest spatial scale and significant exclusive distribution was not detected. Our results suggest that cooccurrence of congeneric tree species is not structured by reproductive interference, and they indicate the need for further research to explore the factors that mitigate the effects of reproductive interference.

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Frequent coexistence of closely related tree species on a small scale in temperate evergreen forests in Japan

10.1101/2021.02.03.429543 ◽

2021 ◽

Author(s):

Shuntaro Watanabe ◽

Yuri Maesako

Keyword(s):

Spatial Scale ◽

Tree Species ◽

Pollen Flow ◽

Reproductive Interference ◽

Small Scale ◽

Spatially Explicit ◽

Small Spatial Scale ◽

Closely Related Species ◽

Evergreen Forests ◽

Species Composition And Distribution

AbstractUnderstanding how biotic interaction affects species composition and distribution is a major challenge in community ecology. In plants, negative reproductive interaction among closely related species (i.e., reproductive interference) is known to hamper the coexistence of congenic species. Since the magnitude of reproductive interference in plants depends on pollen flow distance, we hypothesized that the coexistence of congeners on a small spatial scale would be less likely to occur by chance but that such coexistence would be likely to occur on a scale larger than pollen flow distance. In the present study, we tested this hypothesis using spatially explicit woody plant survey data. Contrary to our prediction, congenic tree species often coexisted at the finest spatial scale and significant exclusive distribution was not detected. Our results suggest that cooccurrence of congenic tree species is not structured by reproductive interference, and they indicate the need for further research to explore the factors that mitigate the effects of reproductive interference.

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Patterns of plant invasions at small spatial scale correspond with that at the whole country scale

Urban Ecosystems ◽

10.1007/s11252-015-0524-y ◽

2016 ◽

Vol 19 (2) ◽

pp. 983-998 ◽

Cited By ~ 9

Author(s):

Marcin K. Dyderski ◽

Andrzej M. Jagodziński

Keyword(s):

Spatial Scale ◽

Plant Invasions ◽

Small Spatial Scale

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Co-occurrence of tree species at fine spatial scale in a woodland cerrado, southeastern Brazil

Plant Ecology ◽

10.1007/s11258-008-9452-8 ◽

2008 ◽

Vol 200 (2) ◽

pp. 277-286 ◽

Cited By ~ 16

Author(s):

Igor Aurélio Silva ◽

Marco Antonio Batalha

Keyword(s):

Spatial Scale ◽

Tree Species ◽

Southeastern Brazil ◽

Fine Spatial Scale

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Alien and native woody plants in scattered vegetation in agricultural landscape

Folia Oecologica ◽

10.2478/foecol-2020-0013 ◽

2020 ◽

Vol 47 (2) ◽

pp. 109-120

Author(s):

Ján Supuka ◽

Attila Tóth ◽

Mária Bihuňová ◽

Martina Verešová ◽

Karol Šinka

Keyword(s):

Tree Species ◽

Woody Plants ◽

Agricultural Landscape ◽

Woody Plant ◽

Robinia Pseudoacacia ◽

Woody Species ◽

Fruit Trees ◽

Lycium Barbarum ◽

Dominance Index ◽

Acer Campestre

AbstractThe woody plant species composition has been evaluated in three cadastral territories of southwestern Slovakia, together in 77 habitats of non-forest woody vegetation (NFWV). A total of 43 tree species have been identified; 8 of them were alien and 5 species were cultural fruit trees. In total 20 shrub species were identified, out of which 3 were alien. Three woody species are classified as invasive according to the law in Slovakia: Acer negundo L., Ailanthus altissima (Mill.) Swingle, and Lycium barbarum L. They occurred only in 2, maximum in 4 of the evaluated habitats. The most occurring alien tree species Robinia pseudoacacia L. was generally identified in 58 habitats and in 48 habitats, with an incidence over 40% and dominance index of 70.6. The second most occurring alien tree Populus × canadensis had a dominance index of 8.3. The dominant native trees in NFWV were Acer campestre L., Fraxinus excelsior L., Quercus robur L., Salix fragilis L. with the dominance index of 1–5 only.

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Functional relationship between woody plants and insect communities in response to Bursaphelenchus xylophilus infestation in the Three Gorges Reservoir region

10.22541/au.161063734.48117379/v1 ◽

2021 ◽

Author(s):

Zhuang Wang ◽

Lijuan Zhao ◽

Jiaqi Liu ◽

Yajie Yang ◽

Juan Shi ◽

...

Keyword(s):

Plant Communities ◽

Tree Species ◽

Woody Plants ◽

Functional Relationship ◽

Woody Plant ◽

Principal Component ◽

Bursaphelenchus Xylophilus ◽

Insect Community ◽

Insect Communities ◽

Masson Pine

To study the effect of the invasion of Bursaphelenchus xylophilus on the functional relationship between woody plants and insect communities, the populations of tree species and insect communities were investigative in the Masson pine forests with different infestation durations of B. xylophilus. In this study, the number of Pinus massoniana began to decrease sharply, whereas the total number of other tree species in the arboreal layer increased gradually with the infestation duration of B. xylophilus. The principal component analysis ordination biplot shows that there was a significant change in the spatial distribution of woody plant species in different Masson pine forest stands. Additionally, a total of 7,188 insect specimens was obtained. The insect population showed an upward trend in stand types with the increase of pine wilt disease infection periods, which demonstrated that the insect community had been significantly affected by the invasion of B. xylophilus. The structure of insect functional groups changed from herbivorous (He) > omnivorous (Om) > predatory (Pr) > parasitic (Pa) > detritivorous (De) in the control stand to He > Pa > Om, De > Pr after B. xylophilus infestation in the forests. The results showed that the populations of He, Pa, and De increased after the invasion of B. xylophilus, but the populations of Pr decreased. Moreover, the redundancy analysis ordination bi-plots reflected the complicated functional relationship between woody plant communities and insects after the invasion of B. xylophilus. The present study provides insights into the changes in the community structure of woody plants and insects, as well as the functional relationship between woody plant communities and insect communities after invasion of B. xylophilus.

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Topography drives microgeographic adaptations of closely related species in two tropical tree species complexes

Molecular Ecology ◽

10.1111/mec.16116 ◽

2021 ◽

Author(s):

Sylvain Schmitt ◽

Niklas Tysklind ◽

Bruno Hérault ◽

Myriam Heuertz

Keyword(s):

Tree Species ◽

Related Species ◽

Tropical Tree ◽

Closely Related Species ◽

Tropical Tree Species ◽

Species Complexes

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Seasonality and Small Spatial-Scale Variation of Chlorophyll a Fluorescence in Bryophyte Syntrichia ruralis [Hedw.] in Semi-Arid Sandy Grassland, Hungary

Plants ◽

10.3390/plants9010092 ◽

2020 ◽

Vol 9 (1) ◽

pp. 92 ◽

Cited By ~ 1

Author(s):

Ruchika ◽

Zsolt Csintalan ◽

Evelin Ramóna Péli

Keyword(s):

Quantum Yield ◽

Fluorescence Quenching ◽

Spatial Scale ◽

Chlorophyll A ◽

Chlorophyll A Fluorescence ◽

Small Spatial Scale ◽

Variation Trend ◽

Fluorescence Parameters ◽

Semi Arid ◽

Sandy Grassland

Bryophytes face challenges due to global climate change which is leading to in-depth research in monitoring and studying their photosynthetic activity. The aim of this preliminary experiment was to study the seasonal variation trend in the chlorophyll a fluorescence parameters, Fv/Fm (ratio of variable to maximum fluorescence), photochemical fluorescence quenching (qP), photochemical quantum yield of photosystem II (ΦPS II), fluorescence quenching (qN), and non-photochemical quenching (NPQ), in the moss cushions of Syntrichia ruralis [Hedw.] collected from semi-arid sandy dunes for two slopes i.e., north-east (NE) and south-west (SW) direction. Our results showed a seasonal and small-spatial scale variation trend in all chlorophyll fluorescence parameters. These variations are due to different seasonal conditions referring to different degrees of environmental stress. ΦPS II and qP values were maximum in winter and in spring seasons while Fv/Fm, NPQ and qN were maximum in summer. Based on the different exposition of dunes, the SW slope showed increased values of the effective quantum yield of PS II and qP in comparison to the NE slope due to the optimal microclimate conditions for their expansion. These results may refer to the future changing in diversification and coverage of the Syntrichia species in semi-arid sandy grassland due to more effective metabolism in the beneficial microclimatic conditions.

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