Forest Deer Research Articles

‘You seem a very intelligent man, and can speak English’: Gaels and Government Inquiries in the Later Nineteenth Century

The Napier Commission (1883), with its focus on the condition of the crofting communities in the Highlands and Islands of Scotland, enjoys a particularly prominent status within the historiography due in large part to the voluminous evidence it collected from a cross spectrum of Highland society. This article considers the ways in which Gaelic speakers were accommodated by this commission and by the later Deer Forest Commission (1893–4), while the language in which many of the witnesses delivered their testimony was simultaneously invisibilised by the official, published evidence. The approaches of governmental evidence-gathering from earlier in the century are considered before focusing on these two commissions which afforded Gaelic speakers the opportunity, on an unprecedented scale, to address these inquiries in their native language. The hazy figure of the interpreter is considered, supplemented by evidence from the contemporary press, as are the ways in which this interpreting process was handled and some of the challenges it presented for witnesses and commissioners. This raises questions relating to the wider linguistic landscape of the nineteenth-century Highlands, to the power dynamic between Gaelic and English speakers and to the ways in which this language barrier was negotiated.

The impact of location, habitat, and climate on morphological variation in the Western Deermouse (Peromyscus sonoriensis: Rodentia)

Abstract Peromyscus sonoriensis is a widespread species ranging from southern Texas to the Yukon, from the Mississippi to the Pacific. Because of this extensive range, there are substantial differences in morphology due to variation in temperature, precipitation, and habitat. We used 2 data sets (n = 4,840 and n = 20,175) to study morphological differences of their crania and appendages. Consistent with Allen’s rule (shorter appendages with colder temperature), both data sets show a strong, positive, correlation between tail length and the average January temperature. However, there was an equally strong, but negative, correlation between tail length and average July temperature. We observed similar results for feet and crania. Ear length had a significant negative correlation with July average temperature but no correlation with January average temperature. When we controlled for temperature, cranial and appendage length increased with latitude, which was opposite of what we expected. Furthermore, longitude had a strong impact as mice trapped further west had longer appendages. When divided into habitats, forest deer mice are more likely than prairie or desert deer mice to demonstrate morphological responses to differences in climate, location, and year trapped. Our results show that P. sonoriensis exhibit notable morphological variation linked to location, habitat, and climate.

The Effectiveness of Tannin on the Amount of Damage to Forest Trees and Stands Caused by Red Deer in the Western Carpathians

Damage caused by cloven-hoofed game and wild animals is a serious problem in Slovakia and neighboring countries. In 2022, the damage to forests in Slovakia was estimated at a level of almost EUR 2.9 million. Despite several implemented measures, the situation is so severe that successfully restoring some trees in some heavily attacked stands is impossible. This paper deals with the preventive elimination of damage caused by red deer in forest stands by the biological method of applying tannin-based mineral licks. Specifically, licks containing tannin obtained from the edible chestnut were used for testing. Several positive effects are attributed to tannins in developing livestock and animal fitness status. To date, however, the question of using tannins as biological agents for the possible protection of forest stands has not been addressed. Therefore, red deer damage was assessed at two localities with similar natural conditions in the central part of the Western Carpathians to explore such a possibility. After the initial sample measurement of the bark-stripping damage caused by the red deer in the autumn, mineral licks with tannin were placed in one selected study area over the winter. The levels of and differences in forest damage by deer between areas with the application of licks with tannin and without tannin were detected in spring of the following year. In the location treated with tannin, the number of damaged sample plots decreased, and the mean plot damage did not increase (no statistically significant differences were registered in mean plot damage between autumn and spring). Meanwhile, in the control location, the total amount of bark-stripped area doubled, mainly due to a statistically significant increase in mean plot damage between autumn and spring. Based on this, we conclude that tannin had a significant preventive effect and considerably reduced the extent of bark stripping. Such promising results indicate that tannin licks can effectively mitigate the problem of bark-stripping damage in areas heavily attacked by red deer.

Estimating red deer population size using vantage point counts at baited sites

AbstractAccurate estimates of population size are central to the management and conservation of wild ungulates. Counting animals from vantage points of baited sites is a method that is traditionally used in Europe to obtain abundance estimates of wild ungulates, but its reliability in forested landscapes is contested. We assessed the accuracy of vantage point counts (VPCs) for estimating population size in red deer (Cervus elaphus) at De Hoge Veluwe National Park, a fenced, partially forested game reserve in the Netherlands. We compared estimates from duplicated VPCs for 1977–2010 with population sizes reconstructed from cohort analyses of age‐specific mortality records, including and excluding supplementation with vehicular direct counts (VDCs) and field knowledge on herd composition and herd size from game wardens. Estimates from VPCs supplemented with VDCs matched the reconstructed population size well for 2001–2010. In addition, estimates based on ≥1 VPC site/11 km2 provided representative estimates of the reconstructed population size in that period. Simultaneous VPCs at multiple baited sites can yield precise population estimates for red deer in forests.

Proposal of the colour pattern reconstruction of basal cervids

ABSTRACTMethodologies that analyse the colouration and external appearance of extant species are very useful tools when facing one of the greatest challenges in the palaeoartistic reconstructions of extinct fauna: inferring the colour patterns. Earlier works have applied this methodology, for example, in the reconstruction of the Miocene bovid Tethytragus, proving that the maximum likelihood (ML) analysis to infer ancestral states has promising potential. This study offers a proposal for the reconstruction of the external appearance of Heteroprox moralesi Azanza 1989, an early cervid of the Middle Miocene present in several fossil sites of Central Spain. For the reconstruction of the external appearance, the colour patterns of all the extant species of the family Cervidae were studied with the method of ML analysis, as well as recent works about their phylogeny. The results show the most probable basal colour pattern of the cervids: dark shades on the limbs, dorsal section, and head of the animal, and, in contrast, lighter colours on the neck and perianal region. This basal pattern can be used as a basis for reconstructing colouration and to hypothesise about the external appearance of extinct taxa. Furthermore, the inferred forest habitat of H. moralesi has been taken into consideration in order to adjust the colour pattern, comparing the final results of the analysis performed in this study with that of the pattern observed in extant forest deer as well as with previous works employing this methodology.

Isolation and Identification of Bone Marrow Mesenchymal Stem Cells from Forest Musk Deer

The forest musk deer (Moschus berezovskii) is an endangered animal that produces musk that is utilized for medical applications worldwide, and this species primarily lives in China. Animal-derived musk can be employed as an important ingredient in Chinese medicine. To investigate the properties of bone marrow mesenchymal stem cells (MSCs) obtained from the bone marrow of forest deer for future application, MSCs were isolated and cultivated in vitro. The properties and differentiation of these cells were assessed at the cellular and gene levels. The results show that 81,533 expressed genes were detected by RNA sequencing, and marker genes of MSCs were expressed in the cells. Karyotype analysis of the cells determined the karyotype to be normal, and marker proteins of MSCs were observed to be expressed in the cell membranes. Cells were differentiated into osteoblasts, adipocytes, and chondroblasts. The expression of genes related to osteoblasts, adipocytes, and chondroblasts was observed to be increased. The results of this study demonstrate that the properties of the cells isolated from bone marrow were in keeping with the characteristics of MSCs, providing a possible basis for future research.

Effects of vegetation type differences induced by human disturbance on the nutrition strategy and gut microbiota of Siberian roe deer.

The Siberian roe deer (Capreolus pygargus) is a widely distributed ungulate in northeast China. Due to a series of human disturbance activities such as large-scale forest cutting, deforestation and reclamation, road construction in the past, the appearance and internal structure of forest vegetation in the habitat of Siberian roe have changed significantly. At the same time, Siberian roe population had a series of ecological adaptation responses in the face of such habitat changes. Therefore, two typical vegetation types with differences were selected in the Muling Forest, China. We used nutritional ecology and microbial metagenomic analysis techniques to compare the nutritional selection strategy and the structure and functional characteristics of faecal microbiota of Siberian roe groups in two vegetation types. The results showed that the α diversity of dietary and gut microbes of deer in Natural Forest was higher than that in Plantation Forest. However, the gut microbes of the Plantation Forest group contained more unique enzymes in the functional pathways of carbon metabolism and biosynthesis of amino acids. This study suggests that habitat type is associated with plant community composition, and contributes to changes in the intake proportions of major macronutrients by altering the availability, quality, and composition of certain edible plants. Feeding behaviour may be an important regulatory factor of gut microbiota structure and function of deer. The metabolic function of gut microbiota to different nutrients may affect the microbial community structure. Therefore, our results suggest that the gut microbes of Siberian roe may have coevolved with their diets, and reflect the adaptability of deer populations to environmental changes (e.g., vegetation type). Our study provides new insights into how spatial heterogeneity affects nutrition and microecosystems by describing the interactions among the environment, diet, and symbiotic gut microbes in wild ungulates.

Using niche modelling and human influence index to indicate conservation priorities for Atlantic forest deer species

To prioritise conservation actions and management strategies for threatened forest deer species at the Atlantic forest, we aimed to identify and describe the most suitable habitat areas for forest deer species and to indicate conservation measures for state agents and local communities. We adopt an approach based on ecological niche modelling, key variable thresholds and spatial analyses. In addition, we associated our approach with a human influence index, an invasive species dataset of occurrences, protected area cover and IUCN category. We indicate 2 % (484 km2) of the Atlantic forest cover as conservation priority areas (CPAs). Of these, 56.8 % are outside protected areas, 20.7 % are inside IUCN categories i, ii and iii protected areas, 19.9 % are inside IUCN categories iv, v, and vi protected areas, and 2.6 % are inside indigenous areas. Also, we indicate the most relevant protected areas for deer conservation in the Atlantic forest. The CPAs were classified into more human-influenced areas (MHIA) and less human-influenced areas (LHIA), and we identified 21 significant (greater than120 km2) continuous CPAs outside protected areas. We highlight actions in several perspectives of human influence, governance levels and law protection that would rationalise the use of funds and human resources.

Changes in roe deer (Capreolus capreolus) daily activity patterns in Warsaw during the COVID-19 pandemic

The COVID-19 pandemic, which modified levels of visitor attendance to urban forests and green spaces, provided a unique opportunity to measure the effects of human presence on wild animals and their activity. The aim of our study was to describe how the daily activity pattern of roe deer (i.e. proportion of day- and night-time observations) changed in response to visitor frequency in urban forests of Warsaw in four periods of 2020 (the year the COVID-19 pandemic was announced) compared to the same periods in 2019 (control year). In total, 662 observations of roe deer were recorded by camera traps in both years. The frequency of roe deer observations in urban forests of Warsaw in day- and night-time did not differ between March 2019 and 2020 (period before lockdown, no changes in the number of visitors). Next, between 1 and 20 April 2020 (national lockdown; urban forests were closed for public) the activity of roe deer increased during the day-time. Between 21 April and 30 June in both 2019 and 2020 the frequency of roe deer observations in day and night-time did not differ (green areas were reopened, remote learning). Finally, in July–August 2020 (summer holidays, tourist traffic in forests elevated all day round) the activity of roe deer visibly increased during the night-time. Our research shows how their activity rapidly shifted toward day-time when forests were closed for visitors, and toward night-time when the number of visitors was higher in urban forests after the lockdown. To summarize, roe deer in urban forests showed high ecological plasticity to human presence and rapidly adjusted to changes in the number of visitors in urban forest during the COVID-19 pandemic.

Status, abundance, and food habit of Sambar deer (Rusa unicolor) in tropical deciduous forest of Central India

Abstract Variation in the foraging strategies of Sambar deer (Rusa unicolor) with changing plant availability has received little attention. The pellet group density and seasonal vegetation availability in tropical climatic conditions of dry deciduous forest of Pench Tiger Reserve, were assessed through indirect evidences (pellet group density). Stratified random sampling was used in different habitats from 2012 to 2015 on a seasonal basis. The Sambar deer (R. unicolor) is one of the largest deer species distributed throughout the Indian subcontinent. Pellet group data were collected on 10 m radius permanent plots at every 200 m intervals on line transects. Teak forest, teak mixed and bamboo forest was the preferred habitat during summer (89.87 ± 88.36), and winter (98.19 ± 94.59) seasons respectively. Microhistological study was conducted to understand the feeding preferences of Sambar through pellet groups. A total of 57 plant species were identified in summer diet. While 51 species of plants were identified in winter diet. Sambar is predominantly a browser and for the conservation of the declining population of Sambar, long undisturbed tract should be protected with preferred browse and grass species.

Deer and invasive plants in suburban forests: assessing variation in deer pressure and herbivory

ABSTRACT Fragmented suburban forests of the northeastern US are challenged by abundant white-tailed deer and nonindigenous plant invasions. Deer browsing/grazing pressure varies among sites, potentially affecting herbivory on nonindigenous plants and their invasion success. We aimed to identify a useful deer pressure indicator for suburban forests and then use it to relate deer pressure to grazing on and abundance of two herbaceous invaders, Microstegum vimineum and Alliaria petiolata. We compared three indicators: fecal pellet accumulation rate, deer browse on indigenous woody plants, and indigenous shrub layer cover. The pellet method produced estimates generally far below the region’s known deer density. Browse rates and shrub layer cover were negatively correlated, and correlations of the three indicators with evidence of deer pressure from a subsequent 6.5-year exclosure experiment supported shrub layer cover as the better choice. Using that measure in 10 forests, we detected a weak pattern of more grazed stands under greater deer pressure, but few plants per stand were grazed; any negative influence of deer on these species was limited to individuals, without population effects. Alliaria petiolata abundance was unrelated to deer pressure, but M. vimineum abundance was greater in forests with more deer pressure, suggesting facilitation of its invasion.

Loyalty and Dissent: Improvement and Clearance in Strathspey after 1853

Although Strathspey experienced many of the same trends – agricultural ‘improvement’, enclosure of commons, creation of deer forests, emigration – present elsewhere in Northern Scotland during the nineteenth century, the region was not a flashpoint for unrest. Careful management on behalf of the ruling family, the earls of Seafield, who were the hereditary chiefs of Grant, the local clan; a consistent policy preference to work with existing farming tenants, and a traditional paternalism, all contributed to social stability. The region was not exempt from protest against the impact of the considerable programme of ‘improvement’ pursued from 1853. There were accusations of ‘depopulation’ and ‘clearance’ in Strathspey, but the influence of those who benefitted from the changes, together with the intrinsic and pervasive authority of the Seafield estate, confined discontent to the constitutional channels opening up as the century progressed. Strong expressions of loyalty to the Seafield proprietors were also a feature of the times. Aspects of this narrative of mutual loyalty are examined, and then the spectrum of reaction to improvement and clearance, the growing lobby for land reform, and the experience of depopulation. Although the influence of the Strathspey factor, John Smith, was important in channelling public discourse, a dilution of estate authority as the century progressed is recognised. The article seeks to broaden perceptions of the history of the Highlands by considering a region of the Gaidhealtachd outwith the far North and the North-West.

Belowground effects of deer in a temperate forest are time-dependent

The past century witnessed a dramatic increase in deer abundance in North America, Western Europe, and Japan, that triggered profound changes in the vegetation structure of temperate forests. Considering the effects large herbivores can have on soil properties and organisms, it is likely that such increased deer abundance will have consequences belowground. Current studies in temperate forests, however, found inconsistent results regarding the effect of deer on soils within, and across, ecosystems. These inconsistencies may be the result of a time-dependent response of the soil to deer presence. Short-term belowground modifications may reflect the direct interactions of deer on soil (i.e. trampling and waste deposition), while long-term belowground modifications may reflect both direct and indirect effects of deer on soil (e.g. through vegetation shifts). To test these ideas, we measured the effects of deer on soil properties and prokaryotic communities in the temperate forests of Haida Gwaii, Canada. We compared three complementary systems varying in duration of deer presence or exclusion, so as to be able to assess the short- (before and after a deer cull), intermediate- (inside vs. outside deer exclosures) and long- (comparing islands with and without deer) term effects of deer, respectively. We found no change in soil physical and chemical properties and in prokaryotic community structure after one year of deer removal. Twenty years of deer exclusion significantly reduced soil compaction but had no effect on soil prokaryotic community structure. Over 70 years of deer presence significantly correlated with: increased soil compaction, reduced total soil phosphorus content and soil prokaryotic diversity, and modified soil prokaryotic community structure and composition. Such effects of deer on the soil may have consequences for nutrient cycling. Revealing the belowground effects of deer in temperate forests, therefore, requires long-term studies, longer than most of those currently available in the literature.

Camera Trap Feasibility for Ecological Studies of Elusive Forest Deer

ABSTRACTThe difficulty in observing and capturing elusive species in the wild is one of the main reasons for the limited number of studies on such species. This knowledge gap affects the development of conservation and management plans. Hence, testing the feasibility of research tools is essential for the future use and reliability of such tools. Camera traps increasingly are used as an alternative to capturing animals for wildlife research, and to generate important data for the management and conservation of many species. We identified individual free‐ranging gray brocket deer (Mazama gouazoubira) from the Brazilian Pantanal by their natural markings. From October 2011 through September 2012, we investigated the feasibility of using camera traps for home range, habitat use, and activity period studies based on individuals with natural marks compared with the concurrent data collected from Global Positioning System (GPS) collars. Home range studies based on camera traps have limitations related to the quantity of individuals with natural marks and need for population premonitoring to detect them. The irregular performance of camera traps and lower detection probability in open habitats restricted its application in the habitat use study, especially among highly heterogeneous habitats. However, the positive correlation (r = 0.98, P < 0.001) between the frequency of photographic records and distances travelled by deer with GPS locations indicated reliable use of camera traps for research into activity periods. Camera traps can be used as an alternative to telemetry, potentially expanding the perspective and scope of noninvasive ecological studies for elusive and cryptic species. © 2020 The Wildlife Society.

Wild Meat Species, Climate Change, and Indigenous Amazonians

People throughout the world are adapting to alternative livelihoods as climate change transforms the earth. The western Amazon basin has recently gone through extreme flood levels that resulted in population declines of species used for wild meat, principally white-lipped peccary ( Tayassu pecari), collared peccary ( Pecari tajacu), red brocket deer ( Mazama americana), lowland paca ( Cuniculus paca), and black agouti ( Dasyprocta fuliginosa). The Cocama (Kukama) people of the Samiria River have adapted to the declining wild meat populations by greatly reducing hunting and increasing their fishing activity. We evaluated the sustainability of subsistence hunting of peccaries, deer, lowland tapir ( Tapirus terrestris), large rodents, and primates in flooded forests of the Pacaya-Samiria National Reserve using camera trap capture rates, density from distance transects, and participatory interviews with Cocama villagers from 2009 to 2018. Peccaries, deer, and large rodents are recovering from population declines that occurred during extreme floods, which suggests that hunting levels are allowing these populations to grow. The primates and lowland tapir have healthy population sizes and stable numbers, which suggests people are hunting these species at sustainable levels. Our results indicate that changes in hunting patterns by the Cocama have permitted peccary, deer, and large rodent populations to recover to varying degrees during years of normal flood levels. The Cocama people are adapting to climate change in a way that agrees with conservation goals and reinforces the importance of community-based approaches to conservation in the Amazon.

High fibre selection by roe deer (Capreolus capreolus): evidence of ruminal microbiome adaption to seasonal and geographical differences in nutrient composition

Context. The European roe deer owes its ability to digest fibre to its microbiome. This is made up of many different species at different levels of abundance and with different differentiations. In Europe, the roe deer is often classified as a so-called ‘concentrate selector’. This term has often been interpreted by different researchers to mean a selector of either protein- or energy-rich food. According to various studies, this selection behaviour is due to the low abundance of fibre-degrading microorganisms. Aims. The aim of the present study was to determine the concentration of crude nutrients in the rumen of roe deer, with the focus on the fibre fractions, and to show changes among seasons and between habitats. Furthermore, the aim was to find out how far the composition of the ruminal microbiota adapts to these changes. Methods. From 2011 to 2014, we collected the rumens of 245 roe deer in two Bavarian habitat types, a forest and an agricultural habitat. The crude nutrient contents and the size of the total microbiome and the proportions of individual genera were determined in the rumen content. Key results. The average annual concentration of crude fibre in the ingested food is 26–30% and this rises to 38% in certain months. The forest roe deer had the highest proportions of crude fibre in their food and the concentrations of other nutrients were also highly dependent on the season and habitat. Furthermore, the animals also have far less protein in their rumen content than often assumed. The total number of microorganisms in the rumens of the forest deer is significantly higher than in animals living in the agricultural area. The number of microorganisms was highest in the forest roe deer in winter, and in the roe deer from the agricultural area in summer. Clear connections can also be seen between individual groups of microorganisms and particular crude nutrients. The high crude-fibre concentration leads to a high number of fibre-degrading microorganisms, such as, for example, anaerobic fungi or the Ruminococcus flavefaciens. Conclusions. The results showed a high adaptability of the animals to a fibre-rich diet. The microbiome adapts very well to the respective nutrient availabilities. This, in turn, is what allows the roe deer to adapt so readily to diverse habitats and environmental conditions. Implications. Due to the generally high concentrations of fibre, combined with the high numbers of fibre-degraders in the rumen, we suggest that, from now on, we should talk of a roe deer as being a ‘selector’ or ‘browser’ rather than a ‘concentrate selector’.

Bawean Island Citizens' Perception and Attitude toward the Existence of Bawean Deer (Axis kuhlii) and Its Habitat

Bawean deer (Axis kuhlii) is an Indonesian endemic - animal species that is categorized as Critically Endangered by IUCN and listed on Appendices I by CITES. This study aims to analyse Bawean citizens' perceptions and attitude to forest and the Bawean deer. The study was conducted by direct interviews and field observations. The respondents were determined by purposive sampling and quota sampling resulted in 191 respondents. The result indicates that the Bawean citizens have a low education level. Some of them finished education after elementary school (39.89%) and have not even completed this level 41.49%. Most of the Bawean citizens work as farmers (62.23%) and rely on the forest for their livelihoods, such as hunting for fresh meat. It is concluded that the educational background and well-being level of the Bawean citizens influence the perception of Bawean deer and wildlife reserve forest. Further, it will affect the existence and sustainability of the forest ecosystem. The citizens' attitudes towards the environment will be favourable if they have a high education level and forest supervision is held continuously.

Green-tree retention and relative habitat use by mule deer (Odocoileus hemionus) 20 years after harvest of Douglas-fir (Pseudotsuga menziesii) – Lodgepole pine (Pinus contorta) forest

Mule deer (Odocoileus hemionus) are a major mammal species in many interior Douglas-fir (Pseudotsuga menziesii) forest ecosystems in western North America. During winter in areas of relatively high snowpacks, mule deer seem to require older trees with large crowns for snow interception, but these forests are often targeted for harvest. Green-tree retention (GTR) may offer a solution to this conundrum. We tested three hypotheses (H) that, at 20–22 years after harvest, (H1) abundance (e.g., basal area and density of residual trees and understory stand structure) of conifers, (H2) abundance, species richness, and diversity of understory vegetation, and (H3) relative habitat use by mule deer, will decline with lower levels of tree retention. Fecal pellet-groups of deer were counted in summer and winter periods for three years in replicated stands of dispersed retention, aggregated retention, patch-cut, group selection, and uncut forest in mixed Douglas-fir - lodgepole pine (Pinus contorta) forest in southern British Columbia, Canada.Mean basal area, density, and canopy closure of overstory Douglas-fir trees were generally greater in the patch-cut, group selection, and uncut forest sites than dispersed and aggregated retention sites, and hence supported the overstory part of H1. Mean density of understory conifers did not support H1 as the majority of these trees were in the dispersed and aggregated retention stands. There was no difference in mean abundance nor species richness of understory vegetation among treatment sites. Mean species diversity tended to be 1.4–1.8 times higher in the patch-cut and group selection than the other sites, and hence provided weak support for H2. Patch-cut and group selection sites were dominated by Douglas-fir trees in both the overstory and understory, along with potential forage shrub species, and were used by deer more than the dispersed and aggregated retention stands in both summer and winter. Relative habitat use by deer in uncut forest was greater than the retention stands and generally similar to the patch-cut and group selection sites in both seasons. These results suggest that partial harvesting of these mixed Douglas-fir – lodgepole pine stands across a range of opening sizes (e.g., 0.1 to 2–5 ha) should provide suitable habitat for mule deer over time.

Seasonal dynamics of forage for red deer in temperate forests: importance of the habitat properties, stand development stage and overstorey dynamics

The recent increase of red deer Cervus elaphus population and consequent damage caused by their herbivory impact increasingly concern foresters and farmers in Slovakia as well as in other European countries. Thus, the topic of vegetation—deer interactions with focus on forage production is especially relevant for developing adequate management guidelines. Using data from 320 sampling plots, we estimated the overall availability of all forage items seasonally consumed by red deer in commercial temperate forests and identified the main factors affecting forage availability in summer and winter. We found that cutblocks were the most productive habitats throughout the year irrespective of the site quality. Summer forage biomass peaked at ≈8 years and winter forage biomass at ≈10 years following felling, then slowly declined as the cutblocks aged and the canopy increased. Understorey vegetation production in mature forests was determined primarily by light availability, as the major driving factor of vegetation growth in the closed‐canopy forest ecosystems, and to a lesser extent by a site quality. We suggest that the site quality index that is traditionally used in forestry is not an efficient predictor of the forage availability for red deer, and estimations of the forage potential of hunting grounds should incorporate more complex models to evaluate carrying capacity of the landscape.

Introduction to the Special Issue: Ungulates and invasive species: quantifying impacts and understanding interactions.

White-tailed deer are emblematic ungulates that, due to anthropogenic modification of landscapes, currently occur at elevated densities. Elevated deer densities often co-occur with non-native plants, but it is not known if plant invasions are a consequence of deer impacts or occur independent of deer impacts on ecosystems, or whether these two stressors are synergistic. A colloquium on 'Interactions of white-tailed deer and invasive plants in forests of eastern North America' explored these topics at the 2016 annual meeting of the Botanical Society of America. Nine of those presentations are published in this special issue of AoB PLANTS.