Do Bears Prefer Acorns or Berries?

Asian black bears are usually about 120 to 150 centimeters in size, however even a comparatively small bear can pose a severe hazard if it costs at shut vary. Reports of sightings and assaults have continued to emerge since spring, with the variety of sightings rising from 527 throughout the identical interval final 12 months to just about double that stage this 12 months, placing the tempo above final 12 months’s report excessive.

The enhance has been particularly noticeable in northeastern Japan, with accidents reported in Hokkaido, Iwate, Fukushima and Toyama. In Iwate Prefecture, a girl in her 50s is believed to have died after being attacked by a bear on April twenty first, a uncommon fatality on Honshu in April. Another lady in her 60s died on May seventh, whereas on May nineteenth, a physique lacking its higher half was discovered within the mountains of Okutama in Tokyo, elevating the opportunity of an assault by a big wild animal, though authorities haven’t but made a ultimate willpower.

Kansai has additionally been compelled to take preventive measures. In Kyoto, bear sightings close to Ninna-ji Temple led authorities to ban entry to the mountain space behind the temple. In Ayabe, a seasonal occasion usually held between March and May was canceled after bears have been seen within the surrounding space. In Hyogo Prefecture, a mountaineering occasion scheduled at Takiyama on May seventeenth was canceled, as was one other occasion in Kamikawa on May twenty fourth, reflecting rising concern that organizers have little selection however to behave earlier than accidents happen.

The query going through native governments is keep a secure distance between bears and other people. A latest examine in Hyogo Prefecture has challenged the long-held assumption that acorns and comparable nuts are the primary autumn meals supply for bears throughout all areas. Researchers spent 4 years inspecting bear droppings and located clear regional variations in weight loss program.

In western elements of Hyogo, bears have been discovered to eat giant quantities of acorns. In areas nearer to the border with Kyoto, nevertheless, bears relied extra closely on wild berries. These aren’t the blueberries generally eaten by individuals, however mountain crops comparable to Vaccinium species and different wild fruiting shrubs.

The examine discovered that in years when bears had entry to considerable berries, there have been fewer sightings close to human settlements. This means that if bears can discover sufficient meals within the mountains, they’re much less prone to come down into populated areas. However, the findings additionally present that measures should be tailor-made to every area. Simply planting berry-producing timber in an space the place bears primarily depend upon acorns might not produce the identical impact.

Researchers additionally discovered a sample within the bears’ meals selections. In the surveyed space, berries have been the popular autumn meals. When berries have been scarce, bears turned to persimmons. When persimmons have been additionally scarce, they moved on to chestnuts. If these meals sources are unavailable, bears might come nearer to properties and ultimately search by rubbish, growing the chance of encounters with individuals.

This implies that native authorities want to grasp not solely the variety of bears but in addition the crops and meals sources in every space. If a area is aware of that berries are a key meals supply and that the berry crop has failed, it could possibly strengthen warnings, handle fruit timber, safe rubbish and take different measures earlier than bears transfer into residential areas.

Hyogo Prefecture has been engaged on bear administration for a few years. After Asian black bears within the prefecture have been designated as an endangered inhabitants in 2003, authorities strengthened efforts to observe and handle the animals. Captured bears have been fitted with microchips to assist observe numbers, and the prefecture has 15 specialist bear employees members, one of many largest such groups in Japan.

The prefecture has sought to take care of the bear inhabitants at round 800, moderately than get rid of it or enable it to develop unchecked. Working with residents, officers have positioned traps close to areas near communities and used inhabitants administration to scale back injury whereas preserving the species.

A rising problem, nevertheless, is the unfold of sightings into so-called clean areas the place bears had hardly ever been seen earlier than. In southern Kyoto and elements of Shiga, a number of municipalities reported bear-like animals for the primary time final 12 months. These areas typically lack the expertise, methods and public understanding that northern areas have developed over a few years.

In Kizugawa, Kyoto Prefecture, 64 sightings have been reported final 12 months, with two extra recorded thus far this 12 months. The metropolis had hoped to start a habitat survey this month, utilizing bait to draw bears for monitoring, however residents have been reluctant to simply accept traps that lure bears nearer to their communities. Officials had deliberate to put in round 20 traps in and across the space, however solely 4 have been arrange thus far. Even if a bear is captured, one other downside stays: the place it ought to be launched, particularly when city areas are close by.

The central authorities has additionally begun strengthening its response. In March, it adopted a roadmap for decreasing bear-related injury, together with stronger inhabitants administration, measures to forestall bears from getting into residential areas and emergency responses when sightings happen. In harmful conditions, this will embrace culling after security has been secured.

Still, the hole between nationwide coverage and the difficulties confronted by native governments stays giant. With bear exercise anticipated to extend once more towards autumn, specialists say communities will want extra detailed native knowledge, sooner response methods and sensible measures that replicate the meals sources and conduct of bears in every area.

Source: YOMIURI