Human Hunting Pressure Research Articles

Modeling post-Pleistocene megafauna extinctions as complex social-ecological systems

Abstract The role of human hunting behavior versus climate change in the mass extinction of megafauna during the Late Quaternary is much debated. To move beyond monocausal arguments, we treat human–megafauna–environment relationships as social–ecological systems from a complex adaptive systems perspective, to create an agent-based model that tests how human hunting may interact with environmental stress and animal life history to affect the probability of extinction. Using the extinction of Syncerus antiquus in South Africa at 12–10 ka as a loose inspirational case study, we parameterized a set of experiments to identify cross-feedbacks among environmental dynamics, prey life history, and human hunting pressure that affect extinction probability in a non-linear way. An important anthropogenic boundary condition emerges when hunting strategies interrupt prey animal breeding cycles. This effect is amplified in patchy, highly seasonal environments to increase the chances of extinction. This modeling approach to human behavior and biodiversity loss helps us understand how these types of cross-feedback effects and boundary conditions emerge as system components interact and change. We argue that this approach can help translate archaeological data and insight about past extinction for use in understanding and combating the current mass extinction crisis.

Density, abundance, and activity of the chilla or grey fox (Lycalopex griseus) in Isla Grande de Tierra del Fuego, Chile

BackgroundThe chilla or grey fox (Lycalopex griseus) is a native species from continental Chile and neighboring areas of Argentina. It was introduced to Isla Grande de Tierra del Fuego in 1951 and began to increase its abundance, to the chagrin of local sheep ranchers. Since 1998, its hunting has been authorized. Here we update information on the density, abundance, and activity of this fox in the Chilean sector of Tierra del Fuego Island, to evaluate its population trend since the last census conducted by the Servicio Agrícola y Ganadero (SAG) in 2007.Methods and resultsWe carried out two fox censuses on a 941-km transect on public roads, divided into eight routes, from October to November (spring) of 2021 and 2022, following the same design used by SAG for the fox assessments carried out from 1999 to 2007. We report a reduction of > 50% in the density and abundance of chilla foxes with respect to the 2007 estimate, which could be attributed to the interference by free-ranging dogs (Canis lupus familiaris), through restricting the use of space by the fox, while transmitting diseases and parasites, and to human hunting pressure and vehicle collisions.DiscussionThe chilla fox decline highlights the need for an in-depth study to determine the ecological and socioeconomic impact of this exotic species on the ecosystems of Tierra del Fuego Island and the desirability of its management, if needed.

Evaluation of multiple behavioral responses of sika deer to human hunting pressures

AbstractSeveral ungulate populations have become overabundant worldwide, resulting in ecological and social effects. Wildlife managers must establish effective population control programs to mitigate these negative influences. Hunting is a significant mortality factor for ungulates, which exhibit sensitive behavioral responses toward hunting activities. Wildlife managers need a comprehensive understanding of the ungulate responses to different hunting pressures across seasons. We developed a conceptual method to evaluate multiple behavioral responses to human hunting pressures and applied this to sika deer (Cervus nippon) in Hokkaido, Japan, during August and November in 2015. We measured flight behavior, spatial avoidance, and temporal activity shift during non‐hunting and hunting seasons in 4 regions with different hunting pressures. Although we did not observe a clear difference in flight initiation distance among study areas or seasons, sika deer showed significant spatial avoidance during the hunting season in areas with high hunting pressure. Furthermore, sika deer were more active at night in areas with higher hunting pressures, regardless of the season. Collectively, these results suggest that sika deer responded to hunting pressure by changing diel activity to nocturnal throughout the year and avoiding risky areas (i.e., around hunting roads) during hunting season, rather than by increasing flight distance when they encounter humans. Our method can be used for a more efficient population control program for wildlife managers, as it considers the spatiotemporal variations of flexible ungulate behaviors in response to hunting pressures.

Vigilance of Plains Bison (Bison Bison Bison) does not vary with Human Hunting Pressure: The Influence of Constitutive Defenses

Vigilance of Plains Bison (Bison Bison Bison) does not vary with Human Hunting Pressure: The Influence of Constitutive Defenses

Spatio-Temporal Analysis of Game Harvests in Sweden

The benefits and costs of wildlife are contingent on the spatial overlap of animal populations with economic and recreational human activities. By using a production function approach with dynamic spatial panel data models, we analyze the effects of human hunting and carnivore predation pressure on the value of ungulate game harvests. The results show evidence of dynamic spatial dependence in the harvests of roe deer and wild boar, but not in those of moose, which is likely explained by the presence of harvesting quotas for the latter. Results suggest the impact of lynx on roe deer harvesting values is reduced by 75% when spatial effects are taken into account. The spatial analysis confirms that policymakers’ aim to reduce wild boar populations through increased hunting has been successful, an effect that was only visible when considering spatial effects.

The First Population Simulation for the Zalophus japonicus (Otariidae: Sea Lions) on Dokdo, Korea

The Japanese sea lion (Z. japonicus) has been regarded as an extinct species since the last report on Dokdo in 1951. Not much ecological information on the Z. japonicus on Dokdo (hereafter Dokdo sea lion) is currently available. Using a discrete time stage-structured population model, we reconstructed the Dokdo sea lion population to explore the effect of human hunting pressure on them. This study provides the first estimate for the Dokdo sea lion population from 1900 to 1951. The reconstructed capture numbers of the Dokdo sea lion and the parameters estimated in this study were well matched with the recorded numbers and ecological parameters reported previously for the Californian sea lion. Based on the reconstructed population, their number rapidly declined after hunting started and it took less than 10 years for a 70% decline of the initial population, which would be considered to be an extinction risk. Since some caveats exist in this study, some caution about our results is necessary. However, this study demonstrates how rapidly human over-hunting can cause the extermination of a large local population. This study will be helpful to raise people’s awareness about endangered marine animals such as local finless porpoises in Korea.

Linking personality and health to use of space in the gray partridge: perspectives for management

Behavioral adjustments are of critical importance for the survival of animals when exposed to risk and resource variations in their environment. Moving to safer habitats allows prey to reduce the risk of mortality triggered by predation. This response has been well studied at the population level to assist in identifying key habitat components for wildlife conservation. However, while individuals may differ in their response to risk and thus in their survival expectancy, the determinants of individual adjustments in space and habitat use are largely unknown in management and conservation studies. Using GPS monitoring, we investigated the relationship between individual traits (morphometry, personality, health status) and adjustments in the use of space relative to risky features (hedgerows, roads/tracks, woodlands, built-up areas) with regard to predation risk. We used the gray partridge (Perdix perdix) as a study model (captive-reared birds released into the farmlands). During the diel cycle, predation risk mainly occurs by carnivores at night, whereas human hunting pressure occurs during the day. We found that personality and health status had an effect on adjustments in the use of space as response to risky features. At night, when carnivore activity is expected to be high, bolder individuals were farther from hedgerows relative to the day. Similarly, individuals in good health were located farther from hedgerows, roads/tracks, and woodland at night relative to the day. We discuss the need for better consideration of individual traits in management and conservation programs, with a particular focus on recovery programs that rely on translocation of captive-reared individuals.

Ecological Effects of Wolves in Anthropogenic Landscapes: The Potential for Trophic Cascades Is Context-Dependent

In recent years, large predators have made a comeback across large parts of Europe. However, little is known about the impact that recolonizing predators may have on ecosystems with high degrees of anthropogenic influence. In Scandinavia, wolves (Canis lupus) now inhabit areas affected by intense forestry practices and their main prey, moose (Alces alces), are exposed to significant human hunting pressure. We used long-term datasets to investigate whether the return of wolves has affected moose distribution (i.e., presence and abundance) as well as browsing damage (i.e., presence and intensity) by moose on Scots pine (Pinus sylvestris). We found that the probability of moose presence and abundance increased with time since wolf territory establishment and was higher inside wolf territories than outside. Additionally, the probability of browsing damage was also higher inside wolf territories compared to outside, but wolf occurrence had no effect on browsing damage intensity. We suggest two possible underlying mechanisms behind these results: (1) wolves might select to establish territories in areas with higher moose abundance, increasing their probability of encounters, and/or (2) hunters within wolf territories reduce the number of harvested moose to compensate for wolf predation. This study highlights that the return of large predators to landscapes with strong anthropogenic influence may result in alternative effects than those described in studies on trophic cascades located in protected areas.

The role of birds in Upper Palaeolithic sites: Zooarchaeological and taphonomic analysis of the avian remains from Arbreda Cave (Serinyà, northeast Iberia)

Intensification in the procurement of small game, including different taxa of birds, has been proposed as one of the indicators of dietary shifts occurring in western Mediterranean regions during the Upper Palaeolithic as a consequence of both increased human hunting pressures and environmental change. In this paper, avian remains recovered from the Upper Palaeolithic levels of Arbreda Cave (Serinyà, northeast Iberia) are analysed. Our results evidence a high diversity of bird taxa in most levels, with the presence of a minimum of 50 species, including birds that inhabit a variety of biotopes such as cliffs, rivers and wetlands, and open grassland, along with coniferous and mixed forests.Taphonomic analysis of the bird bones from all levels indicates a mixed origin for the material, humans being one of the agents responsible for the accumulations. The results show that birds were caught for consumption. However, wing feathers and phalanges were also extracted, probably for ornamental or ceremonial purposes. A significant number of tooth/beak-marked bones and digested remains also evidence the participation of different species of raptors and, to a lesser degree, of small terrestrial carnivores in creating these assemblages. Finally, some birds died naturally and were then incorporated into the archaeological record.This study contributes to the discussion of the importance of the exploitation of birds by hunter-gatherers during the Upper Palaeolithic in the region.

Long-Term Isotope Evidence on the Diet and Habitat Breadth of Pleistocene to Holocene Caprines in Thailand: Implications for the Extirpation and Conservation of Himalayan Gorals

Three taxa within the subfamily Caprinae (Himalayan goral Naemorhedus goral, Chinese goral Naemorhedus griseus, and Sumatran serow Capricornis sumatraensis) live in the mountainous upland forests of Southeast Asia, where they are considered as vulnerable or near threatened species. Co-occurrences between these two recognized genera have been documented from some Pleistocene fossil sites in Thailand, suggesting more widely overlapping distribution in the past than today. However, diet and habitat preferences of these Pleistocene and present-day coexisting species have rarely been investigated so far. For the past three decades, stable carbon and oxygen isotope analyses become more commonplace in ecological investigations, allowing us to explore the diets and habitats of ancient and extant animals as well as to reconstruct environmental conditions in the past. Here we reconstructed diets and habitats of these taxa from five fossil sites in Thailand during the past 400,000 years (from the Middle Pleistocene to the Early Holocene) and from some modern wildlife, using the isotopic analysis of carbonate in tooth enamel in order to test species co-occurrence patterns during the Pleistocene and to examine possible changes of their niche breadths over evolutionary time. Our carbon isotope analysis revealed remarkably different ecological patterns between Naemorhedus and Capricornis. The Pleistocene Sumatran serow has been a greater generalist than both the Himalayan and Chinese gorals that fed on pure C4 or mixed C3 and C4 plants restricted to an open landscape habitat, and than its extant population that occupies a closed-canopy forest. This suggests that the habitat contraction of the modern wildlife is likely due to the Holocene climate change and the human impacts on Thai ecosystems. In addition to the loss or reduction of grasslands after the latest Pleistocene when rainforests became dominant and besides the human hunting and predation pressure, the high interspecific competition likely contributed to the extirpation of Himalayan gorals in Thailand. Developing a strategic plan for the future biodiversity conservation, a long-term historical isotope approach we implemented allowed us to predict the contrasting habitat suitability, a lowland grassland, for these two threatened goral species as testified by their ecological persistence during the Pleistocene.

Hunting and skeletal element abundance of guanaco during the Holocene of Sierras of Córdoba, Argentina

The guanaco (Lama guanicoe) was the most important faunal resource exploited by past people from Sierras of Córdoba (Argentina). However, their relative taxonomic abundance decreased across the Holocene in relation to other small-taxa, which has been interpreted as an evidence of resource depression resulted from changes in the distribution of grassland and human hunting pressure. If the encounter rate with L. guanicoe decreased and hunters needed to travel greater distances to pursue a prey, it should be expected that the pattern in mean utility of body parts would parallel changes in the taxonomic composition of the assemblage. The expectation is that early archaic assemblages will have greater body-parts diversity than late prehispanic assemblages, reflecting a high encounter rate and a more complete deposition of entire carcasses. Conversely, late prehispanic people should respond to the greater cost of hunting by reducing transportation loads, carrying high-ranked body part of carcass to camps. The aim of this article is to test these predictions using a comprehensive analysis of the skeletal part representation from a suite of Holocene archaeological sites dated at 7400-to-360 years BP. The high and low-utility body part frequency observed during the initial and later phases reveals a more dynamic view of late prehispanic site formation process and raises new inquiries regarding whether different taphonomic histories of assemblages can have substantial influence on the skeletal element abundance.

The Role of Forest Elephants in Shaping Tropical Forest\u2013Savanna Coexistence

Forest edges that border savanna are dynamic features of tropical landscapes. Although the role of fire in determining edge dynamics has been relatively well explored, the role of mega-herbivores, specifically elephants, has not received as much attention. We investigated the role of forest elephants in shaping forest edges of the forest–savanna mosaic in Lopé National Park, Gabon. Using forty camera traps, we collected 1.2 million images between May 2016 and June 2017. These images were classified by over 10,000 volunteers through an online citizen science platform. These data were combined with a 33-year phenology dataset on elephant-favoured fruiting tree species, and field measurements of elephant browsing preferences and damage. Our results showed a strong relationship between forest elephant density at the forest edge and fruit availability. When fruit availability was high, elephant density at the edge reached values nearly double the highest densities ever reported in any other part of the landscape (7.5 elephants km−2 in this study vs the previous highest estimate of 4 elephants km−2). The highest elephant densities occurred at the end of the dry season, but even outside of this high density period elephant density at the forest edge (2.4 elephants km−2) was more than double what other studies estimate for forest interiors with low human hunting pressure (1 elephant km−2). We found forest elephants to be selective browsers, but their browsing was non-destructive (in contrast to savanna elephants) and had little effect on tree size demography. Elephant paths acted as firebreaks during savanna burning, making them inadvertent protectors of the fire-sensitive forest and contributing to the stabilising feedbacks that allow forest and savanna to coexist in tropical landscapes.

Northern bobwhite foraging response to hunting

ABSTRACTPrey species must consistently balance the need for resource acquisition with the threat of predation. This balance is particularly true for gallinaceous birds, such as the northern bobwhite (Colinus virginianus), which are ground foragers and are often exposed to increased predation risk compared to arboreal foragers. We studied how bobwhites might mitigate the threat of human hunting pressure by altering their foraging strategy. We directly monitored hunting encounters with bobwhites, during October 2014–March 2015, and collected daily movement paths (n = 514) using radio‐telemetry. We performed first‐passage time analysis to infer foraging behavior by calculating bout frequency, area, duration, and timing. We found bobwhites mitigated exposure to human hunters by increasing foraging frequency coupled with a decrease in duration (15.4%) and area (7.1%) in response to hunting pressure. We observed a temporal shift in foraging away from peak hunting hours by 30 minutes when birds were recently exposed to a discharged firearm. Our results imply that hunting game species can disrupt timing of foraging and therefore influence allocation to competing activities such as anti‐predator vigilance. We propose implementing a dynamic harvest management regime that distributes hunting activity temporally and spatially to mitigate high hunting pressure and reduce behavioral effects on bobwhites. Careful planning of hunting activity should reduce its additive effects on natural mortality while improving hunter satisfaction. © 2018 The Wildlife Society.

Stable isotopes reveal diet shift from pre-extinction to reintroduced Przewalski\u2019s horses

The Przewalski’s horse (Equus ferus przewalskii), the only remaining wild horse within the equid family, is one of only a handful of species worldwide that went extinct in the wild, was saved by captive breeding, and has been successfully returned to the wild. However, concerns remain that after multiple generations in captivity the ecology of the Przewalski’s horse and / or the ecological conditions in its former range have changed in a way compromising the species’ long term survival. We analyzed stable isotope chronologies from tail hair of pre-extinction and reintroduced Przewalski’s horses from the Dzungarian Gobi and detected a clear difference in the isotopic dietary composition. The direction of the dietary shift from being a mixed feeder in winter and a grazer in summer in the past, to a year-round grazer nowadays, is best explained by a release from human hunting pressure. A changed, positive societal attitude towards the species allows reintroduced Przewalski’s horses to utilize the scarce, grass-dominated pastures of the Gobi alongside local people and their livestock whereas their historic conspecifics were forced into less productive habitats dominated by browse.

The feral pig as prey for jaguars: A reply to the ‘Letter from the Conservation Front Line’ by Verdade et al.

Due to habitat loss, poaching and high hunting pressure on their prey, the jaguar Panthera onca is one of the most endangered top predators in the Americas (Galetti et al., 2013; Treves & Bruskotter, 2014). The population of jaguars in the Brazilian Atlantic Forest was estimated to be less than 250 mature individuals, split into many isolated populations (Haag et al., 2010; Beisiegel, Sana & Moraes, 2012). In addition, most of its prey, white-lipped peccaries Tayassu pecari and tapirs Tapirus terrestris, are extinct or restricted to only a few areas (Jorge et al., 2013). In their ‘Letter from the Conservation Front Line’ published in Animal Conservation, Verdade et al. (2015) suggested that feral pigs (Sus scrofa) (Pedrosa et al., 2015), could be an alternative prey for jaguars and may help their populations to recover in Atlantic forest. Although jaguars are known to prey on feral pigs in Pantanal (Cavalcanti & Gese, 2010), we are skeptical that the jaguar's population size would increase and the distribution expand based upon preying on the pigs, and we doubt that jaguars will control the invasion of feral pigs in Brazil. First, feral pigs in the Pantanal are much smaller (body mass ~40 kg, Desbiez et al., 2009) than in the Atlantic forest (body mass ~100 kg, Oliveira, 2012), where they are therefore less likely to be preyed upon by jaguars, unless jaguars selectively prey upon juveniles and piglets. Second, prey's behavior is as important as their body size in determining the predator's success (Hopcraft, Sinclair & Packker, 2005); feral pigs are more aggressive (Graves, 1984) than native species or cattle (Montenegro, 1998; Cavalcanti et al., 2010; Cavalcanti & Gese, 2010). Third, although prey availability is one of the main issues for recovering top predator populations (Galetti et al., 2013; Ripple et al., 2014), jaguars are seen as a significant threat to cattle ranching (Ripple et al., 2014; Tortato et al., 2015). Currently, there are 10 million head of cattle in São Paulo state (Bueno, Martins & Caser, 2015) and they are probably a more logical choice for jaguars (Cavalcanti et al., 2010; Cavalcanti & Gese, 2010). Although cattle are bigger than feral pigs, they are constrained within fenced fields and are less aggressive due to domestication (Cavalcanti et al., 2010). Therefore, any increase in the population of jaguars is likely to negatively impact the attitude of farmers to this predator. We believe that the most effective means of garnering support for controlling invasive feral pigs is to demonstrate their socioeconomic impacts (Jeschke et al., 2014; Massei et al., 2015). Increasing human hunting pressure on feral pigs may decrease hunting pressure on jaguar's prey (Desbiez et al., 2011), thus indirectly benefiting jaguars.

Hunting as a management tool? Cougar-human conflict is positively related to trophy hunting.

BackgroundOverexploitation and persecution of large carnivores resulting from conflict with humans comprise major causes of declines worldwide. Although little is known about the interplay between these mortality types, hunting of predators remains a common management strategy aimed at reducing predator-human conflict. Emerging theory and data, however, caution that such policy can alter the age structure of populations, triggering increased conflict in which conflict-prone juveniles are involved.ResultsUsing a 30-year dataset on human-caused cougar (Puma concolor) kills in British Columbia (BC), Canada, we examined relationships between hunter-caused and conflict-associated mortality. Individuals that were killed via conflict with humans were younger than hunted cougars. Accounting for human density and habitat productivity, human hunting pressure during or before the year of conflict comprised the most important variables. Both were associated with increased male cougar-human conflict. Moreover, in each of five regions assessed, conflict was higher with increased human hunting pressure for at least one cougar sex.ConclusionAlthough only providing correlative evidence, such patterns over large geographic and temporal scales suggest that alternative approaches to conflict mitigation might yield more effective outcomes for humans as well as cougar populations and the individuals within populations.Electronic supplementary materialThe online version of this article (doi:10.1186/s12898-016-0098-4) contains supplementary material, which is available to authorized users.

Night and day: evaluating transect methodologies to monitor duikers in the Dzanga‐Sangha Protected Areas, Central African Republic

AbstractAcross the Congo Basin, human hunting pressure poses the biggest threat to small‐ and medium‐bodied forest ungulates (genus Philantomba and Cephalophus, commonly known as duikers). The exploitation of these species has cascading effects on larger ecosystem processes, as well as on human subsistence practices. This study compares encounter rates and estimated population densities of duiker species, specifically Philantomba monticola (blue duiker) in the Dzanga‐Sangha Protected Areas (APDS), Central African Republic (CAR). Data were collected using direct observations of individual animals during diurnal (135 km) and nocturnal (150 km) transects in the APDS, with abundance estimates produced using DISTANCE software. Transect data demonstrate that within hunted forests similar to APDS, nocturnal rather than diurnal transects yield more individual observations of ungulates. Despite hunting pressure in the region, estimates presented for APDS suggest some of the highest density estimates reported for blue duikers in western and central Africa (58.6 blue duikers per km2). This study directly contributes current regional data on the status of duiker populations at APDS and in the larger Sangha Trinational Landscape (TNS, UNESCO). More broadly, we highlight the potential importance of nocturnal transect data to the development of adaptive management regimes in hunted forests.

An adaptive behavioural response to hunting: surviving male red deer shift habitat at the onset of the hunting season

Hunting by humans can be a potent driver of selection for morphological and life history traits in wildlife populations across continents and taxa. Few studies, however, have documented selection on behavioural responses that increase individual survival under human hunting pressure. Using habitat with dense concealing cover is a common strategy for risk avoidance, with a higher chance of survival being the payoff. At the same time, risk avoidance can be costly in terms of missed foraging opportunities. We investigated individual fine-scale use of habitat by 40 GPS-marked European red deer, Cervus elaphus, and linked this to their survival through the hunting season. Whereas all males used similar habitat in the days before the hunting season, the onset of hunting induced an immediate switch to habitat with more concealing cover in surviving males, but not in males that were later shot. This habitat switch also involved a trade-off with foraging opportunities on bilberry, Vaccinium myrtillus, a key forage plant in autumn. Moreover, deer that use safer forest habitat might survive better because they make safer choices in general. The lack of a corresponding pattern in females might be because females were already largely using cover when hunting started, as predicted by sexual segregation theory and the risk of losing offspring. The behavioural response of males to the onset of hunting appears to be adaptive, given that it is linked to increased survival, an important fitness component. We suggest that predictable harvesting regimes with high harvest rates could create a strong selective pressure for deer to respond dynamically to the temporal change in hunting risk. Management should consider the potential for both ecological and evolutionary consequences of harvesting regimes on behaviour.

Range-expanding wildlife: modelling the distribution of large mammals in Japan, with management implications

The spatial distribution of large mammals has been increasing in industrial nations, often leading to conflicts with humans and significant alteration of natural ecosystems. Species distribution models (SDMs) of the sika deer, Japanese serow, wild boar, Japanese macaque and Asiatic black bear in Japan were constructed to identify the important factors for habitat management. We also projected two scenarios of their future range expansions under a scenario of no change in the variables, and one where the variables change according to a time series. Modelling showed that all species preferred forest and forest/agricultural ecotones. In the best models of the sika deer and wild boar, grasslands (GRASSs) were an important positive factor, while human population density and hunting pressures were negative factors. High human population density was also a negative factor with the Japanese serow and Asiatic black bear. Key environments for the distribution and expansion of large mammals were agricultural areas near forest and GRASSs. Therefore, limiting the access of large mammals to such habitats may contribute to wildlife management. In both scenarios, our projections suggest that the distributions of all species could expand by 2028, resulting in more conflict with humans and significant alterations to natural ecosystems in the future. In order to stop this damaging expansion, habitat management and landscape redesign are important. However, a SDM and future projection include uncertainty. It is necessary to validate the estimates and projections by monitoring the future changes in distribution.

Optimal foraging, dietary change, and site use during the Paleolithic at Klissoura Cave 1 (southern Greece)

This paper evaluates a long sequence of zooarchaeological remains from Klissoura Cave 1 (southern Greece) within the paradigm of evolutionary ecology. The prey choice, central place foraging, and patch choice models are applied to the dataset in order to understand subsistence shifts related to local resource depression and changes in the intensity of site use from the Middle Paleolithic through Mesolithic. Major trends in prey choice indicate that Middle Paleolithic hominins tended to focus on high-ranked large game resources, while Upper Paleolithic and Mesolithic occupants shifted to lower-ranked small game, fast-moving animals in particular. Overarching shifts in prey use do not correspond to environmental change, so they likely reflect human impacts on local prey populations. Reconstructions of body part profiles indicate that hunters exploited large game animals locally, possibly as they passed through the gorge or drank at a nearby stream. Occupation intensity at the site was highest at the beginning of the Aurignacian, which is reflected by an increase in material culture such as lithics and hearth features, as well as different subsistence strategies. Specifically, bone marrow processing is more important, evidenced by ungulate transport decisions that focus on marrow-rich elements, and an overall increase in marrow processing intensity. Environmental data indicate that conditions in southern Greece were particularly favorable at the beginning of the Aurignacian, which supported rich ungulate faunas and larger populations of their hominin predators in the area. In general, faunal data from Klissoura Cave 1 fit within larger trends found in the Mediterranean over the course of the Late Pleistocene, which indicate that human hunting pressures were on the rise. However, many aspects of prey use are specific to Klissoura Cave 1, reflecting unique environmental and cultural circumstances of southern Greece at various phases in the occupation of the site.