Phenological diversity of flowering and fruiting in cassava germplasm

Abstract One critical challenge of exploring flora phenology is on characterizing ecosystem phenological diversity (EPD), and thus how EPD’s performance is influenced by climate changes has also been an open macro-ecological question. To fill these two gaps, we proposed an innovative method for reflecting EPD, by taking the advantage of the often-classified inverse factor of spatial resolution discrepancy between the used remote sensing datasets of vegetation phenological dates (green-up and brown-up) and snow cover phenological dates (SPDs) (onset and end) around the Arctic, and further, we examined the cross response/feedbacks of the two kinds of EPDs to the two categories of SPDs. We found that the circumpolar green-up and brown-up EPDs both were shrinking, driven more by the delaying of the onset SPDs than the advancing of the end SPDs; North America and North Eurasia performed with inconsistent EPD response/feedbacks to the related SPD anomalies; and further, the EPD-SPD response/feedbacks in some locations exhibited the time-lag effect, e.g., the green-up EPDs made the strongest response to the onset SPDs of two years earlier. Overall, the validated method and the new findings are of implications for improving the phenology modules in Earth system models, and the contributions of the present study have enlightening significance for kicking off the new EPD branch in macrosystem phenological ecology.

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Patterns of Specific and Phenological Diversity in the Grass Community of the Venezuelan Tropical Savannas

Journal of Biogeography ◽

10.2307/2844747 ◽

1983 ◽

Vol 10 (5) ◽

pp. 373 ◽

Cited By ~ 25

Author(s):

Guillermo Sarmiento

Keyword(s):

Tropical Savannas ◽

Phenological Diversity

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Impacts of anthropogenic change on biodiversity affect disease spillover risk

10.22541/au.162333361.10264935/v3 ◽

2021 ◽

Author(s):

Caroline K Glidden ◽

Nicole Nova ◽

Morgan P Kain ◽

Katherine M Lagerstrom ◽

Eloise B Skinner ◽

...

Keyword(s):

Biodiversity Conservation ◽

Animal Origin ◽

Future Research ◽

Positive Outcomes ◽

Anthropogenic Change ◽

Zoonotic Pathogen ◽

Environment And Health ◽

Biodiversity Change ◽

Reduce Risk ◽

Phenological Diversity

The integration of biodiversity conservation and public health has gained significant traction, leading to new efforts to identify win–win solutions for the environment and health. At the forefront of these efforts is pin-pointing ways in which biodiversity conservation can reduce risk of zoonotic spillover, especially given the consequences of epidemics and pandemics of wild animal origin. However, there is currently an incomplete understanding of the mechanisms by which biodiversity change influences the spillover process, limiting the application of integrated strategies aimed at achieving positive outcomes for both conservation and disease management. Here, we review the literature, considering a broad scope of biodiversity dimensions, to identify cases where zoonotic pathogen spillover is mechanistically linked to changes in biodiversity. By reframing the discussion of biodiversity and disease using mechanistic evidence while encompassing multiple aspects of biodiversity, including functional diversity, landscape diversity, phenological diversity, and interaction diversity, we work toward general principles that can guide future research and more effectively integrate the related goals of biodiversity conservation and spillover prevention. We conclude by summarizing how these principles could be used to integrate spillover prevention into ongoing biodiversity conservation initiatives.

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Spatial and temporal plant phenological niche differentiation in the Wadi Degla desert ecosystem (Egypt)

Acta Botanica Croatica ◽

10.2478/v10184-011-0057-2 ◽

2012 ◽

Vol 71 (2) ◽

pp. 261-277 ◽

Cited By ~ 6

Author(s):

Ahmad K. Hegazy ◽

Abdelrahman A. Alatar ◽

Jon Lovett-Doust ◽

Hosam A. El-Adawy

Keyword(s):

Plant Species ◽

Niche Differentiation ◽

Life Forms ◽

Desert Ecosystem ◽

Selective Pressures ◽

Dominant Plant Species ◽

Capparis Spinosa ◽

Species Specific ◽

Phenological Diversity ◽

Study Species

AbstractTwenty dominant plant species representing different life forms were investigated phenologically over a period of 36 months (January 2004 to December 2006). Plant populations were sampled at down-, mid-, and upstream sites in a desert wadi ecosystem. The results were analyzed using TWINSPAN, DCA and CCA techniques. Five phenological niches were apparent: (1) species flowering all year round, with peaks in spring and autumn such asOchradenus baccatus; (2) species flowering during winter includingLycium shawiiandTamarix nilotica; (3) species flowering during spring, e.g.,Zillaspinosa, Zygophyllum coccineumandCapparis spinosa; (4) species flowering during summer includingIphiona mucronataandDeverra triradiata; and (5) species flowering during autumn that includeAtriplex halimusand twoAnabasisspecies. The climatic variables, including temperature, rainfall and relative humidity, affect the phenological niches and between-species differences. Within-species variations occurred between years and there were no between-site variations for most study species. The different plant species exhibited phenological diversity along the course of the wadi ecosystem. The phenological niches are species-specific and environmentally dependent rather than local selective pressures.

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