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Question 1
Relationship between biodiversity and ecosystem resilience and productivity?
| Question | Answer |
|---|---|
| What is the general relationship between biodiversity and ecosystem functioning (BEF)? Correia et al 2023 | Biodiversity positively influences ecosystem functioning by regulating processes such as productivity, nutrient cycling, ecological network dynamics, and stability. |
| Why does higher biodiversity increase ecosystem productivity? Correia et al 2023 | Diverse communities use resources more efficiently through niche partitioning, complementary traits, facilitation, and reduced disease/herbivory, leading to higher biomass production. |
| How does biodiversity contribute to ecosystem resilience? Correia et al 2023 | Biodiversity enhances resilience by providing species with varied responses to disturbance, enabling ecosystems to absorb shocks, maintain function, and recover more quickly. |
| What role does species redundancy play in resilience? Correia et al 2023 | Redundancy—multiple species performing similar functions—acts as biological insurance, ensuring processes continue even if some species decline or go extinct. |
| How does biodiversity influence ecosystem stability? Correia et al 2023 | High biodiversity increases stability by promoting asynchronous species responses, reducing variability in ecosystem processes, and enhancing resistance and resilience to disturbances. |
| What is the link between biodiversity and nutrient/biogeochemical cycling? Correia et al 2023 | Diverse species provide multiple pathways for nutrient uptake, transformation, and recycling, improving nutrient retention and supporting long‑term ecosystem functioning. |
| How do ecological networks connect biodiversity to resilience? Correia et al 2023 | Biodiversity strengthens trophic and non‑trophic interactions, creating flexible, adaptive networks that buffer ecosystems against cascading failures. |
| Why do more diverse ecosystems maintain productivity under environmental change? Correia et al 2023 | They contain species with varied tolerances and adaptive traits, increasing the likelihood that some species continue functioning during extreme events. |
| What is ecosystem multifunctionality, and how is it related to biodiversity? Correia et al 2023 | Multifunctionality is the simultaneous performance of multiple ecosystem processes. Biodiversity enhances it because different species contribute uniquely to different functions. |
| How does biodiversity support long‑term ecosystem robustness? Correia et al 2023 | By enabling adaptive responses, maintaining complex interactions, and reducing the propagation of disturbances across scales. |
| What mechanisms explain the biodiversity–productivity relationship? Correia et al 2023 | Complementarity, facilitation, and selection effects—where species either help each other, use resources differently, or include highly productive dominant species. |
| How does environmental heterogeneity interact with biodiversity to support resilience? Correia et al 2023 | Heterogeneous environments allow more species to coexist, increasing functional diversity and adaptive capacity across spatial and temporal scales. |
| Why is biodiversity considered a “buffer” in complex adaptive systems (CAS)? Correia et al 2023 | It stabilizes ecosystem processes by absorbing variability, supporting co‑evolution, and enabling systems to reorganize after disturbances. |
| What happens to productivity when biodiversity declines? Correia et al 2023 | Resource use becomes less efficient, nutrient cycling weakens, and overall productivity decreases, making ecosystems more vulnerable to collapse. |
| How does dispersal contribute to resilience in biodiverse systems? Correia et al 2023 | Dispersal allows species to track favorable conditions, maintain genetic diversity, and connect habitats, supporting ecosystem functioning under change. |
| What does the insurance hypothesis propose about biodiversity and stability? Maestrea et al 2018 | It proposes that biodiversity increases ecosystem stability by ensuring that different species respond differently to environmental fluctuations, stabilizing biomass over time. |
| How does environmental change threaten ecosystem functioning? Hong et al 2022 | Environmental change alters species dynamics and interactions, directly reducing ecosystem process rates and indirectly reducing biodiversity, which weakens ecosystem functioning. |
| What does the study conclude about managing ecosystems for resilience? Maestrea et al 2018 | Different biodiversity facets should be promoted depending on climate: functional diversity in low‑aridity areas and species richness in high‑aridity areas. |
| Why is biodiversity considered a buffer against environmental change? Hong et al 2022 | Biodiversity maintains and stabilizes ecosystem functioning by compensating for species losses or declines, allowing ecosystems to continue functioning despite stress. |
| What did the meta‑analysis reveal about biodiversity’s effect on ecosystem functioning under stress? Hong et al 2022 | Biodiversity effects were stronger in stressful environments, meaning diverse communities resisted environmental change better than species‑poor ones. |
| How do global change drivers (warming, drought, nutrients, CO₂) influence biodiversity’s role? Hong et al 2022 | They modulate the magnitude of biodiversity effects, but biodiversity consistently remains beneficial across all environmental conditions. |
| What mechanism primarily drives biodiversity’s positive effect on ecosystem functioning? Hong et al 2022 | Complementarity effects—species using resources differently or facilitating each other—were the main mechanism enhancing productivity. |
| How does biodiversity influence biogeochemical processes? Hong et al 2022 | Biodiversity tends to enhance nutrient cycling, soil microbial activity, and other biogeochemical processes, though effects vary by taxonomic group and stressor. |
| What does the stress‑gradient hypothesis predict about biodiversity under stress? Hong et al 2022 | It predicts that stressful environments shift species interactions toward facilitation, increasing biodiversity’s positive effects on ecosystem functioning. |
| How does biodiversity affect ecosystem functioning over time? Hong et al 2022 | Biodiversity effects increase with time, as species interactions strengthen and communities develop greater complementarity. |
| Why do diverse communities show higher resistance to environmental stress? Hong et al 2022 | They contain species with varied tolerances, allowing some to maintain functioning when others decline, stabilizing productivity. |
| How do monocultures respond to environmental stress compared to mixtures? Hong et al 2022 | Monocultures show stronger declines in functioning under stress, while mixtures maintain higher productivity due to species compensation. |
| What is the relationship between stress intensity and biodiversity effects? Hong et al 2022 | As stress intensity increases, biodiversity effects become stronger, meaning biodiversity is most valuable under harsh conditions. |
| How do global change drivers influence complementarity and selection effects? Hong et al 2022 | Stress can increase complementarity by reducing competition or enhancing facilitation, while selection effects remain generally weak. |
| Why is biodiversity crucial for long‑term ecosystem stability? Hong et al 2022 | It maintains stable functioning across fluctuating environments, reducing the risk of collapse in species‑poor systems. |
| What does the study conclude about biodiversity’s role in future environmental change? Hong et al 2022 | Biodiversity is a key biological buffer that sustains ecosystem functioning even as global change drivers intensify. |
| How do diverse communities respond to nutrient addition compared to monocultures? Hong et al 2022 | Nutrient addition often benefits monocultures more, reducing the relative biodiversity effect, but mixtures still maintain higher overall functioning. |
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BIRDINATREE
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