内容摘要：Erin Greene, center, owner of Sup North, hands out equipment before leading a paddleboarding tour, Thursday, Aug. 8, 2024, in Churchill, Manitoba. (AP Photo/Joshua A. Bickel)

Erin Greene, center, owner of Sup North, hands out equipment before leading a paddleboarding tour, Thursday, Aug. 8, 2024, in Churchill, Manitoba. (AP Photo/Joshua A. Bickel)

Kelly Martin, who has been spearfishing with his family for multiple decades now, sees changes firsthand. This year he was surprised by the start of the season, which came early because there was no ice on the lake this winter. Wolter explained that winters are becoming wildly inconsistent in terms of length and temperature, and climate change is making some lakes clearer due to prolonged drought periods that slow the influx of river flows, which negatively affects habitat for walleye that do better in murkier water.Martin has seen waters altered by other factors like development, too. After the pandemic, in his work as a roofing contractor, he saw business skyrocket on the lakefront homes that attract remote workers and tourists alike.

“You want to make sure that this lake stays sustainable for everybody, for many years.” he said. “My great-great-grandkids, I want them to be able to have their time with their family and make their stories.”The setting sun illuminates a strip of road winding through the Chippewa Flowage on Friday, April 19, 2024, in Hayward, Wis. (AP Photo/John Locher)The setting sun illuminates a strip of road winding through the Chippewa Flowage on Friday, April 19, 2024, in Hayward, Wis. (AP Photo/John Locher)

The DNR in 2022 updated its conservation plan for walleye, with a focus on climate change. And in January 2023 GLIFWC released the updated version of its climate change vulnerability assessment, a work seven years in the making, driven largely by what they were hearing from tribal members about changes they were observing.“That knowledge held by tribal elders seems to be receiving more widespread acceptance,” and science is both supporting and learning from Indigenous knowledge, Rasmussen said.

Donovan Martin, left, spears a fish as his father Kelly Martin, right, drives the boat on Round Lake Saturday, April 13, 2024, near Hayward, Wis. (AP Photo/John Locher)

Donovan Martin, left, spears a fish as his father Kelly Martin, right, drives the boat on Round Lake Saturday, April 13, 2024, near Hayward, Wis. (AP Photo/John Locher)Scientists estimate the animal was about 2 1/2 feet (80 centimeters) long and may have resembled a modern monitor lizard. The findings were

The hooked claws are a crucial identification clue, said study co-author and paleontologist Per Ahlberg at Uppsala University in Sweden.“It’s a walking animal,” he said.

Only animals that evolved to live solely on land ever developed claws. The earliest vertebrates -- fish and amphibians – never developed hard nails and remained dependent on watery environments to lay eggs and reproduce.But the branch of the evolutionary tree that led to modern reptiles, birds and mammals – known as amniotes -- developed feet with nails or claws fit for walking on hard ground.