No abstract

Business incubators strive to develop robust business and social networks to bring value to their resident companies in the form of intellectual and material resources. Yet, information about what motivates resident companies to participate in networking activities and the obstacles they face in trying to build effective networks is limited. This study employs a communication perspective to examine the process of incubation in an award-winning university business incubator. Using a combination of network analysis and in-depth interviews, the case study reveals the nature of communication in the internal network of 18 resident companies and the incubator administrators. Despite being on the cutting edge of innovations in technology use, study findings reveal face-to-face interaction in the incubator is predominant. The physical proximity of resident companies at the incubator influences who they talk to the most, suggesting incubator site design is important in creating an entrepreneurial environment. The case study also indicates resident company motivations for networking include a strong desire for social support to help manage stress, security of membership in an in-group, and increased access to material or information resources. The primary obstacles residents face to participating in networking and building relationships with each other include extreme time limitations during the early start-up phase, lack of ongoing information about other residents, and lack of trust related to keeping information about innovations and funding sources secure. Implications of these findings and recommendations for incubator managers for building successful and sustainable communication networks conclude the article.

Global environmental change is leading to an increase in the frequency, intensity, and duration of extreme weather events, so effective environmental management requires an understanding not only of the physiological response of organisms to increased mean temperatures, but also to extreme environmental conditions. To determine the physiological consequences of heatwaves on energy and water balance of arid-adapted zebra finches (Taeniopygia guttata), we measured field metabolic rate and water turnover rate of wild, free-living finches during a heatwave (consecutive days of maximum ambient temperature of 40–45°C) and during a cooler period (maximum ambient temperature of 28°C) during a summer drought. To understand how birds accommodated their energy and water requirements, we also monitored feeding and drinking behavior of zebra finches at the study site on hot and cold days over 2.5 months during the same summer. Zebra finches can accommodate heatwaves without major impacts on field energy or water turnover, even when the heatwave is superimposed on high summer temperatures and long-term drought, so long as drinking water is available. In fact, cooler periods may pose a greater energetic challenge than heatwaves during drought, when food availability is limited, due to the increased thermoregulatory cost of maintaining a high body temperature against a thermal gradient. Zebra finches avoided or limited activity during the most thermally challenging periods of the day. Their pre-emptive feeding and drinking in preparation for hours of relative inactivity at high ambient temperature, together with a high body water content and reduced midday activity and metabolic heat production, enabled zebra finches to maintain body mass during a heatwave. Predicting upcoming periods of unfavorably high ambient temperature, together with a high body water content, may be essential for survival by desert birds of extreme ambient temperature during heatwaves.

Fires have occurred throughout history, including those associated with the meteoroid impact at the Cretaceous-Palaeogene (K-Pg) boundary that eliminated many vertebrate species. To evaluate the recent hypothesis that the survival of the K-Pg fires by ancestral mammals was dependent on their ability to use energy-conserving torpor, we studied body temperature fluctuations and activity of an egg-laying mammal, the echidna (Tachyglossus aculeatus), often considered to be a 'living fossil', before, during and after a prescribed burn. All but one study animal survived the fire in the prescribed burn area and echidnas remained inactive during the day(s) following the fire and substantially reduced body temperature during bouts of torpor. For weeks after the fire, all individuals remained in their original territories and compensated for changes in their habitat with a decrease in mean body temperature and activity. Our data suggest that heterothermy enables mammals to outlast the conditions during and after a fire by reducing energy expenditure, permitting periods of extended inactivity. Therefore, torpor facilitates survival in a fire-scorched landscape and consequently may have been of functional significance for mammalian survival at the K-Pg boundary.