How Does Landscape Structure Affect Dung Beetle Assemblages in Amazon Cities?

Ecology and Evolution, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 1, 2025

ABSTRACT The growth of cities is one the main direct and indirect factors responsible for loss native vegetation cover. Urbanization directly affects biological communities inhabiting forest remnants inserted in cities, compromising maintenance urban natural ecosystems. By understanding effects landscape transformation due to urbanization, we can have insights regarding distribution land uses that allow a proper This work assessed structure variables (forest cover, agricultural area, edge density, number patches) on dung beetle assemblages functional groups (i.e., diet resource removal strategy) sampled 38 sites located along an urban–rural gradient six belonging metropolitan area Manaus Central Amazonia. Losses cover were most determining factor, negatively affecting species richness, abundance, body size. increases agriculture affected while density positively their abundance. patches abundances—except dweller species—and size diet‐generalist species. These results demonstrate changes ecological diversity caused by urbanization are driven mostly loss, although configuration important study contributes how amount tropical affect taxonomic assemblages.

Язык: Английский

---

The impact of rare and common species on the functional diversity of forest birds in a palm-dominated landscape in the Eastern Amazon

Acta Oecologica, Год журнала: 2025, Номер 126, С. 104060 - 104060

Опубликована: Янв. 22, 2025

Язык: Английский

---

Postfire Scenarios Shape Dung Beetle Communities in the Orinoquía Riparian Forest–Savannah Transition

Biology, Год журнала: 2025, Номер 14(4), С. 423 - 423

Опубликована: Апрель 15, 2025

The Orinoquía region of Colombia includes diverse ecosystems such as riparian forests and seasonal savannas, which play vital roles biodiversity reservoirs. However, increased fire activity, driven by both natural anthropogenic pressures, poses mounting threats to these ecosystems. Despite their importance, the effects on faunal communities, especially in transitional habitats, are not well understood. Understanding responses across different recovery stages is essential for conservation planning. This study aimed assess occurrence time dung beetle communities an indicator ecosystem resilience. We analyzed taxonomic responses—including species richness, abundance, Hill diversity indices (D0, D1, D2)—as functional traits guild biomass, food relocation behavior, forest–savanna ecotones under varying histories. Our results indicate that recent fires (≤1 year) high frequencies (4–5 events) negatively affect abundance. Dominance a few disturbance-tolerant species, Digitonthophagus gazella, was observed burned while forest habitats supported rare dominant taxa. declines, redundancy maintained, largely due prevalence small-bodied species. we general resilience effect core contributed postfire community reassembly. Functional with small beetles dominating biomass composition. status particularly ecotone, played critical role restructuring. presence resilient assemblages highlights importance sustaining key functions following events. These findings underscore potential bioindicators monitoring emphasize need improved management strategies sensitive

Язык: Английский

---

Capture efficiency of sampling methods and their effects on the dung beetle (Coleoptera: Scarabaeinae) community in an urban remnant of Amazonian forest

Environmental Monitoring and Assessment, Год журнала: 2025, Номер 197(5)

Опубликована: Апрель 25, 2025

Язык: Английский

---

Beyond Hunger: A Connection Between Diet and Gonadal Development of a Ladybird Beetle

Journal of Experimental Zoology Part A Ecological and Integrative Physiology, Год журнала: 2024, Номер unknown

Опубликована: Дек. 18, 2024

Food availability shapes morphology, physiology, growth, reproduction, and overall fitness of insects. Countless research in coccinellids reported the effect diet terms quality quantity on reproductive output. But fewer studies have direct effects food gonadal development both sexes. In nature, ladybird beetle Cheilomenes sexmaculata exhibit preference, favouring Aphis craccivora (nutritious prey) over nerii (poor prey). We hypothesized that beetles consuming nutritious prey abundant will larger heavier gonads. The current study assessed preferred its fluctuations C. sexmaculata. First instars were collected randomly from experimental stock reared two different regimes for a lifetime. After eclosion, each dietary regime dissected daily to assess until maturity. Here, we documented total developmental duration, body weight, weight gonads, GSI, area length, number testicular lobules/ovarioles across treatments. Both significantly affected period, parameters sexes except GSI males ovarioles females varied quality, which found be similar. supply positively growth gonads Beetles with than those limited or poor prey. This improves our understanding beetles, may helpful improving mass rearing beetles.

Язык: Английский

---

Forest loss and increased edge density reduce diversity and ecological functionality of dung beetle assemblages in the Tropical Atlantic Forest

Biodiversity and Conservation, Год журнала: 2024, Номер unknown

Опубликована: Дек. 23, 2024

Язык: Английский

---